how to clean a carburetor at home

The carburetor fuel system is most often found on older foreign-made cars, as well as on domestic cars that run on gasoline. Situations often arise when interruptions in engine operation appear in the form of jerks and failures. In addition, in some cases the engine may not start and may operate intermittently at idle speed. At the same time, fuel consumption increases.

In most cases, such problems are associated with contamination of the carburetor. This device needs to be cleaned periodically. Such a timely procedure ensures safety and uninterrupted operation of the power unit. Every driver should know how to clean it in the field without removing it from the car.

How to clean a carburetor

The main enemy of the carburetor is dirty fuel.
Due to low-quality fuel, malfunctions in its operation are possible. Spark plugs can indicate failures in the concentration of the mixture. The gray-brown color of the candles indicates the correct proportion of the mixture. Black, sooty spark plugs indicate that the mixture is dominated by fuel, while white or light gray spark plugs indicate an excess of air in the mixture. Carburetor cleaning materials

Instructions. It is needed to remove, disassemble, reassemble and reinstall the carburetor.

Clean, smooth rags (not terry).

Carburetor cleaner (preferably in a spray can).

A can of compressed air.

Sticks or toothpicks.

Wrenches and screwdrivers.

There is a large selection of carburetor cleaners. Go to an auto store and select a cleaner specifically for carburetors. If you are offered another, non-specialized cleaner, refuse it; it may not cope with the dirt in the carburetor. And remember, under no circumstances use WD-40 to clean the carburetor, because... it contains oil. Use a special carburetor cleaner in an aerosol can.

If you thought that it was enough to spray the spray into the carburetor and everything was ready, then we hasten to disappoint you - it will not help. A heavily contaminated carburetor will have to be removed, disassembled and all its components cleaned.

To remove and disassemble the carburetor, follow your vehicle's repair instructions. Be careful not to lose springs, screws, or other small parts. When disassembling the carburetor, clean every part. All rubber and plastic parts should be insulated from the cleaner, as it can deform them.

After you have disassembled the carburetor, collect the metal parts in a metal box or glass jar and fill them with cleaner and let them stand, stirring occasionally. Then, under running water, clean the parts with an old toothbrush or toothpicks.

Do not try to pick at the carburetor outlets or valves. These holes supply fuel and air and are very important for the smooth operation of the engine. Such holes can be cleaned with an aerosol or compressed air. The liquid cleaner can be reused. Some thrifty car enthusiasts use the cleaner several times.

After finishing cleaning the carburetor, dry it thoroughly and reassemble it according to the instructions. The cleaned carburetor will need to be installed in the car and re-tuned.

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How to clean

Do-it-yourself carburetor cleaning can be done using several methods:

without dismantling the motor;
partially disassembling;
taking it apart completely.

The second method is the most popular among car enthusiasts. What is he?

First you need to purchase special aerosols. A 200 ml can is enough for one use.

In addition to this, you need to prepare:

several wrenches of different sizes;
screwdrivers;
pliers;
kerosene, acetone or gasoline;
inflater;
several toothpicks;
toothbrush;
a piece of rough fabric;
wooden stick.

When cleaning the carburetor, do not forget about soaking. You need to take two containers, a larger one and a smaller one. The lid will be soaked in one, and small elements in the other.

The next steps look something like this:

With the hood open, remove the air filter cover. To do this, unscrew the nut and remove the latches. Pull out the filter element, making sure that the nuts do not fall into the carburetor. Remove the filter and rubber seal. Disconnect the hoses (fuel and ventilation). Separate the wire end from the solenoid valve. Unscrew the screws that secure the cover to the body. There should be 5 of them. Separate the cap from the carb

At this stage it is very important not to damage the integrity of the gasket. Carefully disconnect the solenoid valve, idle jet, filter plug and fitting

It is also necessary to remove the jets (air and fuel), emulsion tubes, atomizer and diffusers. Fill all parts with cleaning emulsion or acetone/kerosene. Also fill the carburetor cap with some cleaning liquid, but into a larger container. Wait about an hour. Using a cleaning product, wash the interior surfaces. Next, clean the outside of the carburetor. After applying the detergent, wait about 30 minutes. Use a toothbrush to clean the cover of the device. This must be done first from the inside and then from the outside. If there are heavy stains, remove them using sticks. The cleaned parts now need to be blown out. Clean the channels with toothpicks. Now the cleaned parts need to dry. If you don't have time to wait, you can wipe them with a clean cloth. Assemble the system without installing the air filter. With the engine running, spray some cleaning aerosol into the carburetor. Give gas. Repeat the procedure for a couple of minutes. Stop the motor and install the filter.

Do not add acetone inside the carburetor. It will, of course, clean up dirt, but it will also damage rubber and plastic parts.

So, cleaning the carburetor yourself is not that difficult. It is enough to prepare all the necessary equipment and materials, and follow simple instructions.

https://youtube.com/watch?v=92kDxIwV210

Cleaning, cleaning carburetors 2108, 21081, 21083 Solex and 2105, 2107 Ozone

Maintenance of carburetors 2108, 21081, 21083 Solex and 2105, 2107 Ozone mainly comes down to external cleaning and internal cleaning, as well as basic settings and adjustments.

The frequency of these procedures is once a year, and then only on condition that the contamination has reached such a degree that it interferes with the operation of systems and mechanisms (moving moving parts is difficult, channels, jets, float chambers, etc. are clogged) or in a situation where sudden blockage affects the efficiency of the carburetor.

External carburetor cleaning

Washing the external surfaces of Solex and Ozone carburetors can be carried out before making adjustments or, as previously written, before annual maintenance.

To carry out external cleaning of the carburetor, you must have a can of aerosol liquid for cleaning carburetors or 0.5 liters of acetone, a small brush and a lint-free rag. We remove the air filter housing, plug the carburetor from above with a rag so that dirt does not get inside, and successively apply aerosol from a can or acetone with a brush to each outer surface of the carburetor. We wait a couple of minutes. Using a brush, carefully and thoroughly, we remove the dissolved dirt from the recesses and flat surfaces. If desired, you can additionally wipe the outer surfaces with a rag moistened with gasoline or diesel fuel. After cleaning, blow the carburetor with compressed air from a pump or compressor.

Carburetor cleaning

We will clean the channels, jets, float chamber, and fuel filter. Very often, especially when the car has been in use for long periods of time, tar deposits accumulate in the channels and jets of the carburetor, reducing their cross-section, black and brown varnish deposits accumulate on the diffusers and walls of the mixing chambers, and sediments brought from the gas tank are deposited in the mesh filter and the float chamber.

You can clean all this equipment without removing the carburetor from the car engine, except in cases where it is completely coked. To do this, purchase a can of aerosol carburetor cleaner from the store, remove the air filter housing, and start the engine. We spray it into the carburetor from above, while periodically turning the throttle valve drive lever of the first chamber by hand so that the carburetor is properly “gassed.” We repeat this operation several times, trying to get the aerosol not only into the mixing chambers, but also into the channels of the air jets of the Main dosing systems of both chambers (they are clearly visible from above).

Places for cleaning Solex and Ozone carburetors

Next in line is the idle system. With the engine running, pull out the choke so that the rpm is at least 3 thousand. We completely unscrew the solenoid valve or the holder of the fuel jet of the idle system (depending on the carburetor model). And spray the aerosol directly into the hole formed. It’s worth giving the throttle a little with your hand again. After the procedure, blow out the fuel jet in the solenoid valve or holder and screw it back in.

Solenoid valves Solex and Ozone

Next is the float chamber. To clean it, you need to remove the top part of the carburetor (its cover). Use a rag to blot off all the gasoline in the float chamber. Pour acetone into it and let it sit for a while. Use a rag to carefully remove the bulk of the dirt, and use a brush to remove the rest. On a Solex carburetor, the structure of the float chamber is not very convenient for cleaning, so you can use a thin slotted screwdriver, the blade of which is wrapped in a rag, as an additional tool for cleaning recesses and inconvenient places. After cleaning, blow out the float chamber with compressed air.

Solex and Ozone float chambers

Since the carburetor cover has been removed, it is very convenient to unscrew the fuel and air jets and remove the emulsion tubes of the main carburetor metering systems. We also remove the accelerator pump nozzle. Soak everything removed in acetone for about fifteen minutes, then blow it with compressed air and install it back.

We clean Solex and Ozone gas pumps

And finally, a fuel filter at the inlet to the carburetor. We unscrew its plug and remove it from the hole. Soak briefly in acetone and then clean with a toothbrush. We blow it out and put it back, after making sure that there is no dirt in the hole where we screw it in.

Filters and plugs Solex and Ozone

After cleaning and cleaning the carburetor, you should adjust the operation of its main systems and mechanisms and generally set it up for normal operation.

Carburetor adjustment and tuning

We adjust and tune the carburetor in this sequence, although this is not necessary, it seems to me the most optimal. — Adjusting the fuel level in the float chamber of Solex and Ozone carburetors — Adjusting the air damper drive of Solex and Ozone carburetors — Adjusting the throttle valve drive of Solex and Ozone carburetors — Adjusting the starting device of Solex and Ozone carburetors — Adjusting the idle speed of Solex and Ozone carburetors

Notes and additions

— For a more complete and thorough cleaning of Solex and Ozone carburetors, you should remove the carburetor from the car engine. Disassemble and set aside all gaskets, diaphragms and rubber parts. Soak two parts of the body and the lid for 10-12 hours in a container with acetone. Then blow it with compressed air under a pressure of at least 6-8 atmospheres, put everything back together and install it on the engine. — There is another method of cleaning the carburetor, a non-disassembling one. To be honest, it is a little dubious, but its use for preventive purposes is quite possible. For 20 liters of gasoline in the gas tank, fill 0.5 liters of acetone and drive. It is advisable to do this filling before active use of the car, so that it does not stand, but drives.

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Cleaning procedure without dismantling the carb

Here's how it's done.

The VF housing is removed, the EM valve and the plug responsible for the XX mode are unscrewed.
After the internal elements of the carb become visible, it is necessary to apply a stream of aerosol agent to flush all lines of the XX system and the first chamber.
At the same time, spray the aerosol spray into the second chamber and also treat the air jet channels of the main dosing system.

It is important to understand that correct application of the spray also involves treating camera mirrors and diffusers. Cleaning the valves is mandatory

A thin tube is specially provided for this purpose, allowing you to clean the most difficult places.

It is equally important to process the damper drive lever, as well as other components and simple places of the control mechanisms. This will ensure better controllability and normalize the functioning of the carb.

Cleaning does not end with the spray application stage.

You need to wait five minutes. During this time, the product will soften the deposits and wash away the dirt.
Next, you need to start the engine, and then pull out the choke, which will allow the engine to operate at idle speed without an EV valve. It is recommended to gas it a little more for a better effect.

By the way, some drivers do this. The speed of the power plant is forcibly increased in the idle mode, then an additional aerosol is sprayed inside the mixing device. In their opinion, this significantly improves the cleanliness of the carburetor.

The procedure can be repeated two or three times. At the final stage, everything must be put back together, the EM and other elements that had to be dismantled must be put back in place. Also, don’t forget to push the choke back into place.

Interesting point. It is recommended to tighten the valve while the engine is running. This must be done extremely carefully, first carrying out the process with your hands, and at the final stage, apply the force of an open-end wrench. You should turn the EM key no more than a quarter turn, as otherwise you can overdo it. In a word, you need to make sure that after removing the wiring from the EV, the engine begins to stall.

There is another cleaning method. It is much shorter than the above method. Often used by experienced motorists.

Swap the two armored wires from the spark plugs. Replace the current cable of the first cylinder of the power plant in place of the cable of the fourth cylinder, and vice versa.
Start the engine. It will begin to “sneeze” and “shoot”, but this will allow all impurities to be knocked out of the clogged carburetor channels.

During the process of starting an internal combustion engine with armored wires thrown in places, the consistency of ignition is disrupted. The pressure is created from the untimely ignition of fuel assemblies in the combustion chambers. In this manner, you can clean the SWR (carburetor) easily and simply, but you should not leave the engine running in this mode for a long time. In addition, this method is recommended as an emergency, and it is best to carry it out only if you need to drive a car to a service center.

On a note. One way or another, after such a shake-up of the system, the carburetor will still need to be cleaned, because debris from the jets will fall back into the chamber. If this is not done, the channels will become clogged with debris again after some time.

However, it is not always possible to clean the carburetor without removing it. Some models become so dirty during operation that debris accumulates and gets compacted in the float chamber, channels and other areas of the carburetor. It is especially unpleasant when the air supply nozzles become clogged, and the car’s fuel consumption increases significantly.

A carburetor is considered a complex device. Its details are selected with jeweler's precision, there are many of them. To remove all contaminants, washing alone will clearly not be enough. Therefore, carburetor manufacturers use more effective methods. For example, the jets are blown with compressed air, and before that they are soaked in a special liquid.

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When to clean the carburetor

Unfortunately, the fuel we put into the tanks of our cars is not always of high quality. Dirt, corrosion products and water are essential components of any gasoline purchased at our gas stations. They are the cause of contamination of the unit.

Signs of a blockage

Symptoms indicating that the carburetor is clogged include:

But here it is necessary to take into account that the listed signs may indicate other malfunctions, both in the fuel system and in the ignition system. However, if the unit has not been serviced for more than a year, cleaning it will not be unnecessary. Additionally, before starting work, it is recommended to replace the fuel filter in order to be sure that after servicing the device will receive purified gasoline.

Rinse or blow out: which is better?

A carburetor is a complex and precise device consisting of many parts. To remove contaminants inside some of them, washing alone will not be enough. Yes, the body and lid can and should be washed, and if necessary, also cleaned.

With small details things are a little different. Let's take, for example, jets with their channels with a diameter of no more than 2 mm. You are unlikely to be able to wash away the dirt from there at home. The best option here would be to blow out the channels with a stream of compressed air. But it’s better to do this after these parts have soaked a little in one of the liquids that helps dissolve the dirt. It is also recommended to soak large items before washing and cleaning.

Action

Has a complex effect:

dissolution and removal of deposits from the float system, jets, idle passages and other parts;
restoring idle speed;
reducing the harmfulness of exhaust gases;
facilitating cold engine starts;
increasing engine response;
reduction of fuel consumption.

Thanks to this action, it becomes possible to adjust the carburetor until the required efficiency is achieved.

Application

The cleaner is poured into the fuel tank before refueling. Then you need to fill the tank to the top and drive on this fuel until the reserve. One bottle of product is enough for 40-60 liters of fuel. The liquid should be used every three thousand kilometers. More often when using low-quality gasoline.

CARBURETOR CLEANER:

HG3205 / 295 ml (PROFFY COMPACT);
HG3206 / 325 ml.

Expert advice

The main harm of deposits that appear in the system is that these products interfere with the process of normal mixture formation. Consequently, fuel burns worse and more is required. In this case, the dynamics of the vehicle suffers. An effective way to correct the situation without disassembling the system is to use cleaners.

Washing methods and products used for it

There are three ways to flush the carburetor yourself:

The first option involves adding chemically active liquids (additives) to the fuel. In other words, you need to pour a certain amount of cleaning agent into the tank and continue driving your car quietly, without wasting your time. Gasoline with an additive, moving through the fuel system, will itself dissolve and remove dirt. Of course, this method cannot be called effective, and everything that we tried to get rid of will inevitably end up in the engine cylinders.

Well, if you remove and disassemble the device completely, soak all its parts in cleaning liquid, and then rinse them manually and blow them with a stream of air, we will get a practically new carburetor.

Not so long ago, car owners cleaned the carburetors of their cars using liquids that can usually be found at home:

Yes, they do a good job of removing various types of dirt and deposits on the internal walls of the device, especially if you have the opportunity and time to soak the necessary parts in them for a while. But today there is no need to use such means. It is better to purchase a special liquid from a car store. There are products on sale for both self-cleaning of the fuel system (filling the tank) and for servicing carburetors. The most popular and effective of them are:

Signs of severe blockage

The carburetor becomes dirty both outside and inside. Obvious signs of severe blockage:

difficulty starting the power unit in a car;
malfunction of the engine when idling;
when you press the gas sharply, dips are observed;
the car requires more fuel.

We cannot exclude other malfunctions that can also lead to the appearance of these signs of failure, but if the carburetor has not been flushed for more than a year, then in any situation it would not be a bad idea to do so. Before starting work, it is necessary to replace the fuel filter in the system so that after washing the equipment, only purified gasoline enters the device.

Flushing the carburetor without removing it from the engine and disassembling it

Let's look at the procedure for flushing the carburetor without dismantling it using Hi-Gear HG 3205. We need one can of this liquid (295 ml). In stores it costs about 300 rubles, and is designed for 40 liters of gasoline. One jar is enough for a one-time wash. The application procedure is as follows:

According to the manufacturer, the Hi-Gear HG 3205 additive not only promotes self-cleaning of the fuel system, but also helps:

Maybe, of course, everything is not so colorful, but after driving 300–400 km on this additive, you will definitely notice positive changes in engine performance. To maintain the fuel system and the carburetor in particular, it is recommended to repeat the described procedure every 3000 km.

Is it possible to wash it at home without special products?

If you do not have the opportunity to use special products to flush the carburetor, you can do it without them. To do this, simply soak the necessary parts in kerosene (gasoline, acetone) overnight, and in the morning start cleaning and blowing them. With the right approach, the effect will be no worse. But under no circumstances follow the advice of “experts” who recommend pouring a little acetone into the tank or carburetor to clean the fuel system! Yes, acetone perfectly dissolves and removes dirt, carbon deposits, paint residues and even water. But it also dissolves seals, gaskets, and valves made of plastic and rubber!

As you can see, cleaning the carburetor with your own hands is not at all difficult. The main thing is to have a good cleaning product, the necessary tools and a few hours of free time. And to prevent this process from becoming a habit, fill only high-quality fuel into the tank of your car.

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Video text

Do-it-yourself carburetor cleaner (carbcleaner) + cylinder refill

Hi all! Today I decided to use a homemade carburetor cleaner and fill it into a pressure container. Refilling a pressure cylinder

The price of a homemade carb cleaner is about 60 rubles!

This is done quite easily and quickly.

link to this video -

__________________________________________________________ For this we need:

1- acetone 2 - gasoline galosh 3 - white spirit 4 - empty bottle 5 - hose from the system or any other suitable size 6 - gas (propane) in a bottle 7 - syringe, preferably with a plastic piston __________________________________________________________

Composition of carburetor cleaner (carbcleaner): acetone - 33% white spirit - 33% gasoline galoshes 34%

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As you know, you can find quite a lot of carburetor cars on domestic roads. Their main advantages are rightly considered to be affordable price, simplicity of design and maintenance, and unpretentiousness to the quality of engine oil and fuel. In parallel with this, one of the weak points of such cars is the engine power system, or more precisely, the carburetor.

We also recommend reading the article about what a carburetor dosing system is. From this article you will learn about the design, principles and features of the carburetor.

Today there are a large number of carburetor cleaning products on the market. Similar products are found in specialized auto stores, in auto goods departments in large shopping centers, at gas stations, etc. Taking into account the variety and price range, it is logical that every car owner strives to purchase a good carburetor cleaner inexpensively, which will effectively remove all contaminants without harming the dosing device. In this article we will talk about which carburetor cleaner to choose, and also answer the question of how to clean a carburetor with carburetor cleaner correctly.

How to clean a carburetor at home

Hello, dear motorists! Although the number of cars with fuel injection now takes up the lion's share of the market, we cannot forget about carburetor cars. There are many cars with a carburetor fuel system, and therefore, the question of how and with what to flush the carburetor yourself remains relevant.

Unless, of course, you are planning to change the carburetor to an injector on your car. And washing the carburetor with your own hands will help you restore some of the technical parameters of the carburetor and, to a certain extent, reduce fuel consumption.

Provided that the carburetor is cleaned: systematically, in compliance with the cleaning technology and using a carburetor cleaner. Although, folk craftsmen say that you don’t necessarily need a carburetor cleaner. At home, solvent 645-652 works just as well. But, this is a matter of your taste when cleaning and flushing the carburetor with your own hands.

Basic carburetor maintenance work: cleaning and flushing

Like any mechanism, unit or device of a car, a carburetor requires routine maintenance. Thanks to timely and systematic maintenance, the factory parameters and settings of the carburetor will perform their functions longer.

What needs to be done during scheduled carburetor maintenance:

Let's make a reservation: cleaning the carburetor as part of systematic maintenance can take place without dismantling the carburetor.

How to clean a carburetor with your own hands - people's driving experience

Naturally, in the collection of tips from folk craftsmen on how to clean a carburetor, the carburetor manufacturer’s instructions for performing maintenance are always present at the core. In any case, when using a proprietary carburetor cleaner, or gasoline, kerosene, etc., do not forget about fire safety precautions. So, cleaning the carburetor, in order.

Carburetor cleaning - external washing and strainer cleaning

External cleaning is carried out using a brush and any carburetor cleaning product: diesel fuel or kerosene. It is not advisable to use gasoline. After external washing, it is advisable to blow out the carburetor with compressed air. How to bleed a carburetor? The ideal option is an air compressor; if you don’t have it, you can use a car compressor.

Before you start washing the carburetor, do not forget to remove the air cleaner, and make sure that no dirt gets into the internal cavities of the carburetor.

Cleaning the carburetor strainer. Its clogging is a fairly rare occurrence, however, once every 1-2 years or after 50 thousand km. The filter needs to be cleaned. Everything is simple here, the main thing is not to disturb the grid itself.

Clean the mesh filter with a solvent, rinse the filter cavity, and install the filter back, tightening the plug tightly.

Cleaning the carburetor - washing the insides of the carburetor

With just one caveat so as not to repeat myself. When using carburetor flushing fluids, always remember that a strong solvent can damage non-metallic parts of the carburetor (diaphragm or gaskets). Therefore, wash them separately and only with gasoline.

To clean the float chamber: remove the air filter, loosen the fuel hose clamp, remove it. After removing the float chamber, do not touch the float so as not to bend or damage the float. Do not lower the carburetor cap with the float down.

To avoid contamination of the float chamber with fibers from rags, clean the float chamber using a rubber bulb, sucking out fuel from the bottom of the chamber. If necessary, clean the bottom of the chamber with a thin, stiff brush, and repeat the operation with a rubber bulb.

We clean the main fuel air jets using compressed air. If the nozzle is very clogged, then thin copper wire is used to clean it.

What fluid to use to flush the carburetor

Given the huge range of auto chemicals, no one will give you clear recommendations on this matter. We can only say with confidence that the branded carburetor cleaning fluid helps remove all deposits that arise in the carburetor during its operation.

When using any of the existing carburetor cleaners, reviews of which you will find on the Internet, remember that first, no matter how much they praise it, thoroughly study the instructions for using the cleaner.

For example, Abro, a carburetor cleaner, according to the manufacturer: removes carbon deposits and poorly soluble resins. Affects the reduction of exhaust gas toxicity. And the Hi gear carburetor cleaner reduces fuel consumption. Although, an increase in fuel consumption is not always hidden in a dirty carburetor.

The manufacturer, as a rule, recommends using a carburetor cleaner every 5-7 thousand km when using low-quality gasoline. mileage

As a result, we summarize: cleaning and flushing the carburetor, with normal fuel, is necessary 1-2 times a year, or with a mileage of 20-50 thousand km.

Reliable engine operation depends on many elements, including the carburetor. If you use low quality gasoline, then at some point this unit of the power system may become clogged. Gradually, plaque appears on the inner walls of the carburetor, problems arise with the filter, jets and float chamber. It is in such cases that the need to clean the carburetor most often arises.

Top 3 best cleaning products

Among the cleaners, the following brands are most popular:

Hi-Gear. The advantages of the product include high efficiency. This is achieved due to the use of complex synthetic compounds in the cleaning agent. Also, car owners are attracted by a wide range of products depending on the degree of aggressiveness of their impact on pollution. Produced in both liquid and aerosol forms. The product is deservedly ranked first in popularity.
Abro. This product is used to clean both the outer and inner surfaces of the carburetor. To increase the effectiveness of the product, it is used with the engine running. However, if it gets on the paint, the substance can corrode the surface. To avoid damaging the paintwork, the affected area is washed with water and wiped with a rag.
MANNOL. An effective means of combating carburetor contamination, which has a low cost. Allows you to clean both the “insides” and the outer surface of the part. The product is quite economical to use.

If you purchase cheap analogues, you should exercise special care and caution. Trying to save money, you can buy a low-quality cleaning agent that will not only not clean the carburetor, but will also harm the components and mechanisms. When purchasing, you need to focus on the cost of the cleaning product, the brand and the reputation of the seller. As for brands, here you need to rely on the experience of other drivers; as a rule, the products of unpromoted companies are not much inferior to branded substances, but there is also a high risk of purchasing counterfeit products.

To summarize, it is worth saying that the carburetor is a reliable and unpretentious part, which in some respects is much better than an injector. But she also requires care. Carburetor contamination leads to problems with other vehicle systems.

To learn more about carburetor cleaning, we recommend watching the video.

The Importance of Carburetor Cleaning

Experienced owners know where to look for a carburetor. It is located under the hood, and right on the engine intake manifold there is a carburetor injection that constantly interacts with gasoline and air. This important power system component includes several exposed parts that are susceptible to contamination. Read about how to clean the intake manifold here.

When the car is actively used, the internal and external surfaces of the carburetor are covered with a layer consisting of particles of engine oil. Engine temperature changes also negatively affect its operation. All this ultimately leads to the appearance of contamination on both the internal and external surfaces of the carburetor. This manifests itself in the formation of deposits of soot, dust, oil and gasoline film. And the longer this situation persists, the more dust will form on the surfaces of this unit.

Car carburetor design

For normal operation, the engine must receive a fuel-air mixture.
The regulation and supply of the mixture is entrusted to the carburetor, which controls mixing in strict proportions. That is, a carburetor is a device that creates a ready-made mixture of gasoline and air. He supplies it in certain doses to the engine. The node consists of the following elements:

two chambers separated by a partition;
jets and channels;
float with axle;
needle valve;
throttle valve;
Venturi tubes.

This carburetor is called a float carburetor. The principle of its operation is simple: a special line is connected to one of the chambers, through which gasoline is supplied directly from the tank. The next portion of fuel gets inside only after the float with the shut-off valve drops. When the chamber is full, the needle shuts off the fuel supply.

The main jet acts as a calibrator. Through it, gasoline enters the atomizer, then into the mixing chamber. Here the process of mixing fuel with air entering through the throttle valve occurs.

A carburetor is a complex device capable of recognizing several operating modes of an internal combustion engine:

maximum loads;
idling;
average speed;
cold work.

It should react differently to each mode. In one case, enrich gasoline with oxygen, in the other, minimize the supply of fuel. Therefore, every part of such a complex device must be in good working order and clearly calibrated.

Symptoms of pollution

Every owner should know when to start worrying and flush the carburetor. The critical state of this element can be determined by a number of characteristic features:

Unfortunately, it is not always possible to say that the source of the problem is the carburetor when the above symptoms appear. Therefore, in such cases, it is imperative to first carry out a full diagnostics of the engine. Only after this can you start thinking about how to clean the carburetor.

If you constantly monitor the condition of this unit and regularly clean it, this will subsequently allow you to avoid many unpleasant moments, including unnecessary financial expenses and loss of time due to vehicle downtime.

Owners who neglect to wash this unit in a timely manner often experience the symptoms described above. In especially severe cases, when it is heavily clogged, dust and dirt as a result of vacuum may even end up inside the cylinder, and this can lead to the appearance of scuff marks on its mirror and carbon deposits on the surface of the piston.

Care products

Any modern carburetor cleaning spray is an order of magnitude more effective than the compounds that were available before. And first of all, this is manifested in their higher quality.

Types of cleaning compositions

Car owners do not have any particular problems with how to flush the carburetor at home. There are two types of cleaning products available to them today:

Before using an aerosol cleaner, it is necessary to completely disassemble the working unit. In this case, a higher efficiency of the procedure is guaranteed. In the second case, when a special liquid is used, such complex manipulations are not required. The cleaning composition is simply poured into the gas tank, where, after mixing with fuel, it ends up in the carburetor, simultaneously removing all contaminants from the internal walls. Subsequently, the dirt enters the combustion chamber, and from there it exits through the exhaust pipe.

Tips for choosing

In order not to make a mistake when choosing a cleaner, you must follow a number of rules:

Safety rules should not be neglected. The aerosol cleaner contains many flammable components, so if handled carelessly, a fire hazard may arise. It is also necessary to take into account that such liquids have a specific odor. For this reason, it is recommended to clean this unit not only away from sources of fire, but also when creating conditions for good ventilation.

Thorough cleaning

Air jets

In severe cases, it will not be possible to clean the jets without removing the carb. Over time, debris accumulates in the carburetor chamber, causing the passages to become clogged and clogged.

Preparing for a thorough cleaning is called interfering with the position of the spark plug wires. Two armored wires are swapped (for example, the armored wire of cylinder 1 is placed in place of the wire of cylinder 4, and vice versa). The engine starts, with a terrible “shooting” and “sneezing” sound. This allows sediment to be automatically knocked out of the channels back into the chamber.

How to use an aerosol cleaner

Despite the high effectiveness of this product, each owner must first learn how to clean the carburetor using this spray.
A special feature of the aerosol cleaner is that it has a special dispenser and a tube, thanks to which you can adjust the direction of the liquid when cleaning the required surface, regardless of the difficulty of accessing it. But to use this method, you will first have to completely or partially disassemble the power supply system itself. It is recommended to completely disassemble the carburetor. In this case, all the necessary conditions will be created to clean every surface of the working unit from contamination.

In order to better understand exactly how to clean this part, you should consider this process in the following steps:

After the working unit has been cleaned, it is necessary to install new air and fuel filters. Additionally, you should check that the crankcase gas cleaning system is in working order. If this is not done immediately, then within a couple of months the carburetor will become dirty again and will require unscheduled cleaning.

Description of aerosol cleaning compositions

Aerosols for carburetors, as you already understand, are considered more effective and easy-to-use means for cleaning fuel system elements. They can be used quite often, which makes it possible to prevent many problems associated with carburetor contamination.

Aerosol cleaners are specially selected chemical compositions consisting of organic substances, all kinds of solvents, and inorganic compounds. Some of them perform an auxiliary function, and some - the main one. “Essential” compounds are usually called active compounds because their concentration in a cleanser determines its effectiveness. It is the active substances that penetrate into all corners of the carburetor unit and thoroughly remove various contaminants from its elements.

If these compounds do not have the required characteristics, the cleaner will not be able to cope with complex deposits (for example, tar deposits). Solvents included in aerosols can be made from organic substances or gasoline. Solvent components determine the duration of action of the cleaner and the level of its “aggression”. Moreover, the effectiveness of the cleaning composition does not directly depend on the basis of the solvent (organic or gasoline).

The popularity of aerosols is due not only to their effect, but also to their ease of use. You will only need to press the sprayer a couple of times, and then wait the time specified in the instructions for the “autochemicals” to complete the cleaning. In most cases, no additional actions are required.

With all the many advantages of modern cleaners, the driver must understand that they do not provide complete maintenance and professional cleaning of the fuel system and carburetor of the car. In particular, not a single “heavy-duty” aerosol composition is able to penetrate the float compartment and fuel jets. In any case, your “swallow” should be periodically sent to an auto repair center for high-quality cleaning of its internal components.

Important Tips

Considering this opportunity, after cleaning the power system unit, you should check the condition of the fuel pump and fuel tank. Some vehicles may have a mechanical fuel pump. It also needs to be checked and, if necessary, cleaned with an aerosol cleaner. If this is not done immediately, then very soon the dust present on the membrane and valves of the pump may again enter the carburetor and lead to new blockages.

To restore the fuel tank to proper condition, it will first have to be dismantled. Experts also recommend regularly cleaning this unit, since a lot of dirt often accumulates in it due to the use of low-quality gasoline. Subsequently, the sediment formed in the fuel tank can penetrate into the carburetor, and this happens with enviable regularity, even though fuel enters it through the fuel filter and the float chamber mesh.

To bring the fuel system into working condition, it is necessary to clean all key elements, starting with the gas tank and ending with the carburetor. Using an integrated approach will ensure stable engine operation and normalize fuel consumption.

Stages of work

remove the VAZ 2107 carburetor. To do this, you must first remove the air filter along with the housing;
External washing. Includes cleaning the housing from oil deposits, washing the housing channels with pure acetone or gasoline, and blowing them out of the compressor. Diffusers and emulsion wells are cleaned. All sealing elements that the carburetor contains are evaluated;
Washing the float chamber filters;
Washing the chamber itself;
Cleaning jets;
Checking the operation of the starter, float mechanism and idle mechanism.
Check the operation of the accelerator pump system. To do this, all parts are cleaned and purged with a compressor. Pay attention to how easily the ball moves in the valve - screw (9). Make sure that the pump elements move easily, namely the roller, diaphragm and lever. In this case, the diaphragm does not allow deformation.

It is worth saying that after cleaning and adjusting such an important unit as the carburetor, do not forget to pay attention to the air filter and replace it if necessary.

Other washing methods

Sometimes it happens that there is no special means for cleaning the working unit nearby.
In such cases, solvent No. 646 can help. Although you shouldn’t rely too much on it. The effectiveness of this cleaning method is quite low, and it only allows for a short period of time to remove contaminants from the surface of the carburetor. The proper operation of this part depends not only on the frequency of its cleaning, but also on the product used. In order not to make a mistake in choosing this product, you need to carefully familiarize yourself with its composition and properties in the store. It is imperative to take into account the activity of using the cleaning agent. We should also not forget that all elements of the fuel system require regular cleaning. To ensure proper operation of the carburetor, it is recommended to clean it of dirt every 10-15 thousand km.

Trouble-free operation of a vehicle depends on many components, not least of which is the carburetor. Every car owner should regularly check its condition. This is especially true for those who use low-quality fuel. This factor increases the likelihood of clogging by an order of magnitude. But you can avoid the negative consequences caused by a dirty carburetor if you clean it regularly.

Every car owner can handle this task with his own hands, so you don’t even have to turn to specialists for help. When disassembling this power unit, it is only necessary to remember the location of the main parts. But first you need to understand what is the best way to flush the carburetor.

This must be a special composition designed to remove contaminants from the internal and external surfaces of the working unit. It is not recommended to save on the purchase of cleaning fluid, otherwise this may soon result in new, even more serious problems for the car owner, the elimination of which will require not only more time, but also financial costs.

Most new gasoline cars are equipped with fuel injection systems. However, on our roads there are a sufficient number of cars with carburetor engines. They often have weaker performance characteristics, but remain popular due to their high self-repairability.

Most systems in carburetor cars can be put in order in a garage with a minimum set of auxiliary tools. The list of available operations also includes carburetor cleaning.

Some recommendations for choosing a carburetor cleaning composition

Each company that produces auto chemicals for cleaning the fuel system strives to ensure that its products are of the highest quality possible and have special characteristics that favorably distinguish the product of this company from similar products of competitors. This gives rise to a dual situation: on the one hand, there is a huge selection of cleaning auto chemicals, and on the other hand, it is very difficult to choose the most suitable composition among the available abundance. Another element of ambiguity is the fact that experts cannot give any clear recommendations on the use of any product.

They suggest being guided by reviews of the products of a particular company, fame and positive reputation of the manufacturer. A good hint for car owners can be a test of a specific cleaning composition, performed by specialists and published on specialized websites or in print publications dedicated to automotive topics.

In addition, experts in the field advise giving preference to cleaners that are not too aggressive on catalytic converters, oxygen flow sensors, and turbochargers.

Why do this

The serviceability of this element of the fuel system significantly affects the quality of engine operation. Significant pollution causes excessive fuel consumption, negatively affects the dynamic properties of the car and has a negative impact on the environment. A regular cleaning procedure can almost completely restore its functionality. After all, even small specks that get into the jets can create significant problems.

Indirect signs will help identify the need for cleaning without disassembly. These include a clear decrease in dynamics and interruptions in fuel supply. You also need to pay attention to the spark plugs. If they are covered with a large layer of black soot or soot, as well as if they are clearly white, then you should think about how to clean the carburetor. The normal color for candles is a slight brownish tint.

Using a compressed air cylinder

Preparatory activities

Before starting work, you should take care of the materials and tools used:

Carburetor cleaning spray

Various chemical reagents are offered for use on the shelves of car dealerships. Each carburetor cleaner has its own advantages and disadvantages. The most common among users are LIQUI MOLY, Gunk Carb Medic, Run Way, ABRO CC-200.

You need to know that you cannot use WD-40 as a carburetor cleaning liquid, since it contains oil that is undesirable for this process.

The cost of special products for cleaning up the carburetor can range from, for example, $6 for a 350 ml can of Liqui Moly MTX Vergaser Reiniger to $18 for a spray with a capacity of 0.75 liters of IPONE Spray Carbu Cleaner.

If the level of contamination is not severe, it may be sufficient to use gasoline for cleaning. But it will be problematic to wipe off heavily ingrained soot.

The best carburetor cleaners

Vergaser-Aussen-Reiniger from Liqui Moly. The best carburetor cleaner for combating medium and severe contamination comes in 0.4 liter cans. Helps remove non-ferrous metal oxides, carbon deposits, etc. The kit comes with a long spray tube.
Carb Reiniger Spray from Ravenol. Carburetor spray that effectively removes carbon deposits, resins, varnish deposits, etc. Suitable for cleaning carburetor exhaust valves and passages, throttle valves, jets, etc.
PN08796 from 3M. Carburetor and throttle body cleaner. It is also suitable for removing contaminants from the intake tract temperature sensor and from the forced crankcase ventilation system. Copes well with soot.