DIY carburetor 2108 repair

In detail: DIY carburetor 2108 repair from a real master for the site my.housecope.com.

The VAZ 2108 car appeared on the roads of our country at the end of the 80s of the 20th century. For the angular shape of the body, the car received the popular nickname "chisel". Despite this, this car brand was extremely popular until the end of the last century.

The vast majority of "eights" were released from the assembly line with atmospheric gasoline carburetor engines. The manufacturing plant most often equipped the VAZ 2108 carburetor with fuel supply systems with installed two-chamber devices of the DAAZ 21083 "Solex" brand.

Malfunctions of the DAAZ 21083 Solex carburetor most often occur due to the use of low-quality fuel with a low octane number and a high content of metal additives. Dirty gasoline clogs up the jets, and the car starts to freak out. The most common symptom of a clogged carburetor is dips - interruptions in the operation of the engine in various modes.

Troubleshooting a VAZ 21083 carburetor usually comes down to cleaning and adjusting it. Small repairs to this important device can be done by hand and without dismantling.

The Solex carburetor includes such components.

Unit location in the car

Unit heating system.
Throttle valve (DZ) 1 camera.
The branch pipe to which the crankcase ventilation hose is connected.
Accelerator pump drive lever.
Drive cam for the same pump.
Pump diaphragm.
Fuel jet for power mode economizer.
Accelerator pump housing.
Power mode economizer diaphragm.
Solenoid valve.
Idling fuel jet (XX).
Unit cover.
1 chamber air jet.
Air damper.
Accelerator pump nozzles and fuel supply valve.
The membrane of the starting device.
A screw with which the starting device is adjusted.
A screw to help regulate the amount of mixture.
Lever blocking 2 cameras.
The branch pipe to which the hose from the vacuum ignition timing regulator is connected.
A screw that allows you to adjust the quality of the mixture.
DZ control unit for both cameras.
DZ drive lever for both cameras.
A screw with which the opening of the DZ 1 camera is regulated.
Air damper control lever.
Starter rod.
Forced economizer switch electrical wire XX.
Choke lever.
Air jet 2 chambers.
Emulsion tube.
Sprayer 2 chambers.
The branch pipe to which the hose from the fuel pump is connected.
Return pipe.
Gas filter.
The valve is needle.
DZ 2 cameras.
Lever DZ 2 cameras.
Fuel jet 2 chambers.
DZ drive lever 2 cameras.
Float.

Video (click to play).

As can be seen from the presented diagram, the device of the DAAZ 21083 carburetor is quite simple. The unit has a mechanical drive for opening the throttle valve 2 chambers, which compares favorably with OZON carburetors.

The VAZ 2108 carburetor has a branch pipe for draining excess gasoline into the fuel tank. Thanks to this, an electric petrol pump can be installed in the power supply system of this vehicle.

Many car enthusiasts think that if the car does not start, then, of course, the clogged carburetor is to blame. However, this seemingly indisputable statement is very far from the truth. Most often, the car does not start due to faults in the electrical wiring in general and the ignition system in particular. If there is a spark, the starter turns the crankshaft, but the engine stubbornly does not want to work, most likely the gas pump is faulty or the fuel lines are clogged with air or dirt plugs. In this case, you should not immediately sin on the carburetor. If this unit is really faulty, the following symptoms will indicate a problem:

too low number of crankshaft revolutions when the engine is in neutral - the engine seems to be about to stall;
in all gears, the engine stalls as soon as you release the gas pedal;
too high gasoline consumption: more than 12 liters per 100 km of run in city driving in winter and more than 9 liters when traveling in summer;
unexpected interruptions in the operation of the power unit: the number of revolutions of the crankshaft when you press the accelerator pedal suddenly decreases almost to a complete stop of the engine for 2-10 seconds, and then sharply rises again to the required value.

All of the above symptoms indicate that the repair of the VAZ Sputnik-Samara carburetor is necessary. Most often, the malfunction of this important device is associated with the suction of excess air through leaking connections and fuel lines. In second place are contaminated jets. Less commonly, ruptured diaphragms, springs and levers are the cause of breakage.

Air leakage can be eliminated only by replacing old fuel hoses, coupled with careful sealing of the connections. Cleaning the carburetor VAZ 21083 is carried out without dismantling the unit. List of required tools and cleaning agents:

key for 10;
crosshead screwdriver;
minus screwdriver;
syringe;
200 ml of acetone;
aerosol can for cleaning the carburetor;
repair kit.

We remove the air filter together with the filter element.
We start the engine.
We spray with aerosol into all visible holes of the carburetor and at the same time constantly gas.
After the visible traces of dirt have been removed, we pull out the suction so that the number of revolutions of the crankshaft is kept in the range of 2500-3000.
We unscrew the solenoid valve and spray into the resulting hole with spray, gas and blow the hole with a pump or compressor.
After that, we turn off the engine and turn on the valve.
Next, remove the carburetor cover by unscrewing a few screws.
With the help of a syringe, we remove all gasoline from the float chambers.
Pour acetone into the chambers and leave for half an hour.
We unscrew all the jets, having previously remembered where they were located, and send them to the remaining acetone.
After half an hour, we remove acetone from the chambers with a syringe and wipe off the undissolved dirt with a minus screwdriver wrapped in a cloth.
We take out the jets from the solvent and purge them with a pump, then screw them into their original places.
Disconnect the fuel supply hose, remove the plug, O-ring and take out the fuel filter. We replace it. Then we screw everything back.
Pour 3 cm of gasoline into the float chamber, put on the carburetor cover and start the car again.

After cleaning the carburetor, the engine should stop stalling without gassing. If there are still dips in the operation of the power unit, the parts of the accelerator pump should be replaced.

We carry out the operations described above in paragraphs 1-12.
Using a minus screwdriver, we take out the spray of the accelerator pump.
Pour gasoline into the float chamber and turn the DZ 1 camera lever. If a strong jet hits from the hole where the spray gun was, then we only change it.
If the trickle is weak, remove the cover of the accelerator pump and change all the insides.
We collect the unit.

Read also: DIY webasto bmw e39 repair

This completes the repair. We wish you good luck and smooth operation of the car!

The most common reason for the breakdown of the VAZ 2108 - 21099 carburetor is the incorrect location of the floats, the installation of the floats should only be checked using a template. The specified instructions can be used when repairing the carburetor of a VAZ 2108, 2109 car.Initially, we remove the air filter, disconnect the air damper rod, then the fuel drain wires, supply wires, the solenoid valve wire.Ideally, a template should be made to regulate the fuel level. We place the carburetor cover with floats to the top in a horizontal position, install a template made in advance on it. No more than 1.0mm - this is the acceptable gap between the template and the floats. More or less the gap is adjustable by bending the float arms or tongue.A thin copper wire with a smaller diameter than the hole in the orifice is best for cleaning the nozzles, otherwise the calibration of the orifice will deteriorate.If you have not done cleaning the carburetor before, then you should read the repair manual for the VAZ 2108, 09 and its modifications, at least the section "Arrangement and assembly-disassembly of the carburetor".Discover, when to clean the Solex carburetor the following symptoms will help:triplet engine (unstable idle);twitching and failures when starting or moving;The reasons listed above may indicate that the carburetor is dirty and needs to be cleaned. Of course, the carburetor suffers most from low-quality fuel. Do not underestimate the importance of spark plug color - it can tell you the composition of the fuel mixture.All VAZ 2108, 09 were equipped with Russian-made Solex carburetors. Therefore, regardless of the modification of the carburetor - the setting principle is identical... Carburetor cleaning is carried out indoors and on a newspaper to avoid debris. One grain of sand - and the whole robot went down the drain.You can also read the detailed adjustment process in the blog - How to adjust the carburetor of a VAZ 2109.The maintainability of the carburetor is known to many motorists. Therefore, the relevance of its settings and adjustments does not disappear to this day. The vaz 2108 carburetor has a mechanism that does not require large maintenance costs, special tools and diagnostic equipment. Correct the appearance of malfunctions in the fuel supply unit, possibly at home, with your own hands. Image - DIY carburetor 2108 repair

On the roads of the Russian Federation there are still "eights", "nines" and some models of "classics" running. The front-wheel drive family deserves special attention, it is it that young people really like. We propose to discuss the VAZ 2108 carburetor, or rather its tuning, repair and adjustment.

Calculating a carburetor malfunction is quite simple. In most cases, the engine can be started with a faulty power supply. The motor will be far from perfect, but it will show signs of life.

The main symptoms of carburetor failure are as follows:

insufficient number of revolutions and the engine is trying to stall;
the engine stops working as soon as the driver stops pressing the gas pedal;
increased fuel consumption: more than 12 liters per 100 km in winter and from 9 liters in summer;
the appearance of dips in the operation of the motor, after a sharp press on the accelerator.

The list of faults indicates that the VAZ 2108 carburetor needs to be repaired. Perhaps there is an air leak, the jets or the fuel filter are clogged. Springs and levers could break. Less often, the diaphragm of the accelerating pump fails.

Repair and adjustment of the VAZ 2108 carburetor will require a little preparation from the owner. Depending on the season, troubleshooting can be done in the garage or outdoors. You should buy an aerosol cleaner for carba and acetone in advance. It will not be superfluous to purchase a carburetor repair kit, you may need to replace some elements.

From the tool you will definitely need:

screwdrivers: slotted and Phillips;
open-end wrenches with a jaw: 7, 8, 10, 13, 14 mm;
pliers;
medical syringe.

Compressed air is required to blow through the channels and nozzles of the carb. Its source can be: a compressor, a compressed air cylinder or a car pump.

Among the main reasons for the failure of the carburetor is low-quality fuel: with a high content of metal additives or resins. Gradually the nozzles become clogged.If the engine loses idle, it means that in 90% of cases, the problem is caused by dirt or gradual sediment. The presence of dips also signals the contamination of a unit such as an accelerator pump. Cleaning is required, and then adjustment of the VAZ 2108 carburetor systems, which most car owners do with their own hands.

If the tool and related products are prepared, you can proceed to action:

it is required to remove the air filter housing by disconnecting the gas outlet hose and unscrewing the four nuts on the studs;
start the engine;
spray an aerosol cleaner into all visible places, podgazovyvaya with a choke lever in the process;
then it is necessary to pull out the suction so that the arrow on the tachometer is from 2500 to 3000 rpm;
then the solenoid valve is unscrewed. It is necessary to spray the cleaner into its seat, with periodic gas addition. It is also necessary to treat the hole with compressed air;
then you should turn off the engine and install the valve in place;
be sure to remove the carburetor cover by unscrewing the four screws with a slotted screwdriver;
a medical syringe removes gasoline from the float chambers;
instead of gasoline, pour a little acetone and leave for half an hour;
then unscrew the jets, marking their placement;
jets, it is also necessary to soak in a separate container with acetone;
after 30 minutes, acetone should be removed from the float chambers and the loosened dirt should be wiped off;
get the nozzles, blow them out with compressed air, wipe them and screw them back in;
disconnect the gasoline supply hose, remove the fitting and take out the fuel mesh filter;
replace it with a new one and put the hose back;
put the carba lid in place.

Pour gasoline into the float chamber and start the engine. After such cleaning, it is permissible for the engine to idle with minor interruptions, which will be eliminated further. If there are dips when the gas is pressed sharply, then the accelerating pump is not performing its functions.

You need to do the following:

remove the carburetor cover;
remove the nozzle of the accelerating pump;
soak it in acetone;
unscrew the cover of the accelerating pump;
spray the carb cleaner into the opened channel;
then blow out the hole with compressed air;
replace the membrane;
take out the soaked UN nozzle and blow it out with compressed air;
collect everything back.

Start the engine and gas with the throttle lever. According to the instructions, failures will disappear with a high probability.

We proceed to the second stage of work. To provide the car with good dynamics, the VAZ 2108 carburetor should be adjusted. It will not be superfluous to check the candles and high-voltage wires for defects, as they can introduce confusion during the tuning process.

VAZ "eights" and "nines" were equipped with licensed Solex carburetors

There are no fundamental differences between the models. All have the same design, but the sizes of the metering elements (nozzles, diffusers) differ, there are some features of some units.

All of the above carburetors are of the float type, that is, those in which a float chamber is used to maintain a stable flow of fuel into the mixer. It consists of a container for fuel floating on the surface of the float liquid and a valve controlled by it, whose task is to limit the flow of excess fuel.

Gasoline is mixed with atmospheric air in two mixing chambers

Gasoline is mixed with air in two mixing chambers. The first is used constantly, the second is connected when maximum output is required from the motor.

The main dosing system operating under load (in motion) ensures stable mixing ratio and includes flow restricting jets and emulsion tubes to slow the fuel flow.

The dosing of the mixture at low speeds is carried out by the idle system. It uses its own nozzles and emulsion tubes that deliver fuel to the space behind the throttle.

In addition to the listed components, there are adjusting elements in the idle system: the quality screw changes the proportion of the mixture, the amount screw opens the throttle valve. The starting system helps the engine start.

A short-term inflow of additional fuel with a sharp gas pedal is provided by an accelerating pump, which consists of a diaphragm, two valves (suction and delivery) and a sprayer.

The enrichment of the mixture in the degree required for the loaded engine is provided by the power mode economizer and the econostat. Saving gasoline is assigned to the forced idle economizer.

They say that the ambitious project "chisel", as the VAZ-2108 will be called for its characteristic chopped shapes, was personally approved by Leonid Brezhnev - the secretary general had a particular weakness for the novelties of the domestic auto industry.

Alexey Kovanov

Repair is the determination of a breakdown, based on its manifestation, and the elimination of damage by replacing defective parts or in another way.

Spare parts and parts that fail most often are sold both separately and as part of repair kits. They usually include:

gaskets,
seals,
springs,
hairpins,
valves and their components,
the axes of the floats,
screws,
diaphragm,
jets,
emulsion tubes. Spare parts and parts are sold as part of repair kits

The carburetor is an important component of the fuel system. Its malfunctions are immediately reflected in the nature of the car's movement.

failure - slowing down or lack of reaction of the car to pressing the gas pedal for several seconds;
jerk - short-term failure;
twitching - a series of jerks;
swinging - several failures in a row;
sluggish acceleration - slow increase in speed;
difficult starting of the motor or inability to start;
unstable idle;
high fuel consumption.

There are two reasons for a difficult start: either the proportions of the mixture are changed (too rich or poor), or for some reason the fuel does not reach the carburetor.

Access the carburetor. Press the throttle lever 2-3 times. At the same time, the accelerator pump injects gasoline into the chamber, which can be seen. If there is one, the reason for the difficult start is most likely a violation of mixture formation. The booster pump injects gasoline into the chamber, which can be seen
If there is no gasoline in the mixing chamber, check that it comes out of the tank. Try to pump fuel with the gasoline pump manually by disconnecting the inlet hose from the carburetor fitting.
If gasoline is poured out of the hose in a pulsating jet in time with the pumping, the pump is probably operational. Check the cleanliness of the strainer and the carburetor inlet needle valve.
It is not out of place to make sure that the fuel pump pumps not only manually, but also from the engine drive. To check, lower the free end of the hose into the bottle, crank the crankshaft with the starter. If gasoline does not flow, while the pump manually pumps it normally, then the problem is in the drive. Make sure that the fuel pump is pumping not only manually, but also from the engine drive

In addition to a problematic gas pump, the reason for the lack of fuel can be clogged hoses, a clogged fuel intake and fine filter, and a violation of the ventilation of the gas tank.

To check ventilation, open the gas tank cap, try to pump fuel. If it appears at the outlet of the fuel pump, the clogging of the ventilation holes should be removed.

Hose permeability is checked by blowing with a pump or mouth.

To restore the performance of the mesh filter, wash it in gasoline or acetone, blow with air.

The performance of a stuck needle valve is sometimes restored after lightly tapping on the carburetor body. Even if tapping helps, replace the valve as soon as possible.

The mixing ratio can be disturbed by an incorrect (due to sticking) position of the air damper or damage to the diaphragm of the starter. These problems often manifest themselves with a cold start of the engine.

In addition to them, it is necessary to check the level in the float chamber, the tightness of the gaskets and hoses. Through damage and loose connections, extraneous air can enter the carburetor, changing the optimal mixture ratio.

On the first prototypes of the VAZ-2108, the front fenders, hood, doors and trunk lid were made of aluminum! Hinges, reinforcements, safety bars and other details were also cast from the "winged" alloys. Even the rims were planned to be used unusual - made of polypropylene and polycarbonate, and gas tanks - “blown out” of polyethylene.

Alexey Kovanov

A high level of gasoline in the float chamber - the carburetor "overflows" - usually affects the start of a hot engine.

In addition, the "overflow" manifests itself as unstable idling, black smoke from the exhaust pipe, carbon deposits on candles, dips and the smell of gasoline under the hood.

Among the reasons for the "overflow" are the problems of the throttle valve, solenoid valve, jets and fuel pump. But most often the floats or the needle valve are "to blame".

When the needle sticks in the open position, nothing prevents the flow of gas, while its level in the float chamber should be stable.

A similar picture develops when a depressurized float loses its buoyancy and does not control the valve, or the float mechanism is not regulated.

To check the level in the float chamber, the health of the needle valve and floats, to adjust the float mechanism, remove the carburetor cover.

To check the level in the float chamber, the health of the needle valve and floats, to adjust the float mechanism, remove the carburetor cover

The required level of gasoline is 25–26 mm from the top edge of the chamber. If less or more, adjustment is required.

Check that the needle valve is working by creating a vacuum in the inlet connection with a rubber bulb or with your mouth. If the valve is leaking air, the only way to repair is to replace it.

Place the cover on a flat surface with the floats facing up. Examine her. The correct position of the floats is parallel to the marks on the bottom of the carburetor on the gasket. The lever tongue should be centered on the valve ball. The distance from the bottom edge of the floats to the spacer is 2 mm.

Distance from the bottom edge of the floats to the spacer 2 mm

Bending the rods of the lever, achieve a position when the upper cut of the floats is 34 mm higher than the cover. The free play of the bottom edge is adjusted by bending the tongue. Its norm is 15 mm.

Bending the lever rods, achieve a position when the upper cut of the floats is 34 mm higher than the cover.

In the vertically turned lid, the tongue presses against the ball, closing the valve. The marks from the stamp on the side faces of the floats must be parallel to the cover.

The integrity of the floats is determined by external inspection. For a more accurate assessment, they are removed and placed in a container with gasoline, pressing down with a load.

The first (main) chamber of the VAZ-2108 (2109) carburetor prepares the mixture at idle, low and medium load. The second is connected to help when the load increases.

The problems of the first chamber are manifested in idle violations, dips and jerks. When the camera is completely inoperative, the engine stalls, it is worth releasing the gas pedal.

The performance of the camera depends on the health and adjustment of the throttle valve. But most often the cause of violations is in the contamination of the nozzles, pipes and channels.

Many motorists, desperate to restore their working capacity, spend money on a new carburetor. Waste can be avoided by thoroughly cleaning the carburetor.

For cleaning, the jets and emulsion tubes are unscrewed and removed and marked so as not to be confused during assembly.

First, the float chamber is washed using exclusively a rubber bulb, but in no case with a rag, which can leave invisible villi in the carburetor.

The channels, nozzles and pipes are blown out with a strong air jet, washed with gasoline, acetone, thinner or carburetor cleaner. Gasoline is used most often for cleaning. It does not harm diaphragms and seals, but it flushes out deposits worse than other solvents.

Heavily clogged nozzles are cleaned with a wooden toothpick or copper wire with a diameter of 0.8 mm. Washing and blowing is repeated until completely clean.

The carburetor may freeze during prolonged driving at a constant speed in wet, cold weather. In places with the highest air speed, ice appears, clogging the air channels to such an extent that the engine stalls. Ice can be seen by quickly removing the air filter cover. But on a warm engine, it quickly melts.

To prevent icing, heated air is supplied to the air filter at low temperatures along with cold air. Some drivers unknowingly get rid of "unnecessary" details, creating the prerequisites for the formation of ice.

To prevent icing, warmed air is supplied to the air filter at low temperatures along with cold air.

Freezing up the carburetor is not a big problem. As soon as the engine is turned off, the ice melts in a few minutes.

Usually the carburetor is serviced and adjusted directly at the engine. Removal and disassembly is required when normal troubleshooting methods do not help.

To work with the carburetor, you will need the following tools and accessories.

Initially, we remove the air filter, disconnect the air damper rod, then the fuel drain wires, supply wires, the solenoid valve wire.

Ideally, a template should be made to regulate the fuel level. We place the carburetor cover with floats to the top in a horizontal position, install a template made in advance on it. No more than 1.0mm - this is the acceptable gap between the template and the floats. More or less the gap is adjustable by bending the float arms or tongue.

A thin copper wire with a smaller diameter than the hole in the orifice is best for cleaning the nozzles, otherwise the calibration of the orifice will deteriorate.

1) In the case when the filter mesh is torn, and it cannot be washed in any way, the filter is changed. If the o-ring is compressed very tightly, it also changes;
2) If floats and gaskets are damaged, they are replaced with new ones;
3) If traces of touching the floats appear on the chamber wall, the float bracket is bent, then their installation is checked using a template;
4) We blow out the channels and the hole in the carburetor cover with compressed air;
5) Inspection of the starting device is carried out. We change the damaged diaphragm and spring (if it is cracked);
6) Blow through the idle fuel jet with compressed air. Clean with thin copper wire if not blown through. With the rest of the jets, the same operations;
7) We carefully look at the O-ring. We change if it is cracked, if there is no elasticity;
8) Checking the solenoid valve. We connect the “+” wire of the battery terminal to the valve terminal, and the wire from the “-” terminal to the valve body. The needle of the valve itself must be strongly retracted into the body. If the needle is not retracted, the valve should be replaced;
9) We inspect all components of the accelerating pump. We change the diaphragm and spring, if they are even slightly damaged;
10) We check the carburetor body, the mating surfaces of the cover, and the accelerator pump. We change parts with damaged surfaces;
11) We check the freedom of movement of the lever in the cover of the accelerating pump - it must work without jamming;
12) We inspect the spare parts of the powerful mode economizer. We change the damaged diaphragm / spring;
13) We check the surface of the cover on the carburetor body, on the economizer;
14) You can clean the holes of the emulsion tubes with acetone, or with gasoline;
15) We blow the hole under the spray of the accelerating pump with compressed air.

Adjusting the VAZ carburetor for front-wheel drive car models is reduced not only to adjusting the idle speed, although this is the main type of adjustment. On the Samara family (Sputnik), DAAZ carburetors of the Solex type were installed. A feature of the Solex carburetor is that its design is practically unchanged on various car models, and the necessary characteristics of the preparation of the fuel-air mixture are achieved by using sets of diffusers and jets of certain sizes, depending on the working volume of the gasoline engine. In other words, adjusting the VAZ-2108 carburetor is performed in the same way as adjusting the VAZ-21093 carburetor.

Unlike the Ozone carburetor in Solex, the connection between the throttle valves of the first and second chambers is not gas-dynamic, but mechanical with the help of traction. Another feature of Solex is that the idle system is conventional, and not autonomous, as in Ozone. Therefore, when adjusting the VAZ-21083 carburetor, the screw for the amount of the mixture actually opens the throttle valve of the first chamber. If your "nine" needed to adjust the VAZ-2109 carburetor, then it is best to entrust this work to specialists who will do it with the help of a gas analyzer.

In Ryazan, there are many service stations that adjust carburetors.

On the other hand, adjusting the VAZ Solex carburetor is within the power of a motorist who is familiar with the device of this unit and has certain ideas about the principle of its operation. As mentioned above, the main type of adjustment of the VAZ-21099 carburetor, for example, is to adjust the stable operation of the engine at idle speed with a minimum content of CO in the exhaust gases.

Work on setting up the carburetor must be started only when the gas distribution mechanism and the ignition system are in good working order. Naturally, the carburetor itself must be serviceable and all adjustments must be made in it, including the accelerator pump set up.

The video by Evgeny Travnikov clearly shows the adjustment and small "tuning" of the accelerator pump.

For beginners, to understand the principle of operation of the Solex carburetor, another video by Evgeny Travnikov will be useful.

You should not use all kinds of components not recommended by the manufacturer for an apparent improvement in the carburetor operation. It is not necessary to screw in the jets from the VAZ-21213 carburetor when setting up and adjusting the VAZ-2110 carburetor - nothing good will come of it.

This is what Evgeny Travnikov talks about in the next video.

For many car enthusiasts, cleaning the carburetor is a serious problem that they hesitate to tackle on their own. The same can be said for carburetor adjustments.

Another video from Evgeny Travnikov "on the fingers" shows how to do it.

Sooner or later, any owner of a car with a carburetor fuel supply system is faced with malfunctions of this important device. We will tell you how to properly remove, repair and adjust the carburetor of a VAZ 21099 car without the help of specialists.

The manufacturer installed DAAZ 21083 carburetors, Soviet copies of Solex devices popular at that time, on VAZ 21099 cars with engines of 1100 and 1300 cubic centimeters. DAAZ 21053 carburetors with enlarged diffusers and jets were mounted on cars with a 1500 cubic centimeters engine.

When replacing a faulty device, this feature must be taken into account, because if an unsuitable carburetor is installed, the engine idle speed will be unstable and fuel consumption will increase in both urban and combined cycles.

The main symptoms of carburetor malfunction.

The car jerks when driving on the highway.
Failure occurs when the accelerator pedal is pressed sharply
The engine stalls on the move.
The engine simply won't start after being idle.

Symptom 1 occurs when the fuel and air jets are clogged, the accelerator pump malfunctions and air leaks due to cracks in the carburetor housing.

Symptom 2 indicates the need to replace the accelerating pump.

Symptom 3, when the engine stalls on the move, indicates a clogged air filter or large particles of dirt entering the carburetor with complete closure of the fuel or air passages.

Symptom 4 indicates a sticking of the needle valve in the float chamber or vaporization of gasoline through cracks in the carburetor cover.

There is a latent sign of a carburetor malfunction - increased fuel consumption. This phenomenon occurs when the combustible mixture is re-enriched due to incorrect adjustments or clogging of the air filter and nozzles.