In detail: vaz 21099 do-it-yourself carburetor repair from a real master for the site my.housecope.com.
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.
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.
Video (click to play).
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.
1 symptom 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.
VIDEO 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.
Carburetor repair is a simple procedure. When removing it, you do not need to replace the pump, fuel pump or battery. The device of a VAZ 21099 car allows you to quickly remove a faulty device. All you need to do is have a standard set of keys and a little patience.
First, remove the air filter along with the filter element.
Then we disconnect the air damper rod. It is located on the right side of the carburetor, in the direction of travel of the car.
In the same place, we remove the return spring of the gas pedal drive.
Use a screwdriver to pry on the spring clip on the gas drive sector and remove it.
Then we take out the throttle cable from the drive sector.
We disconnect all the wiring pads from the carburetor, having previously marked their connection points so as not to be confused during assembly.
We loosen the clamps and remove the fuel hoses.
We unscrew the screw and dismantle the heating unit for 1 chamber.
We remove the crankcase ventilation hose, and then the vacuum tube going to the breaker - the ignition distributor.
We unscrew the 4 fastening nuts and carefully remove the carburetor.
To top it off, cover the outlet with a clean rag so that no dirt gets into it.
The main unit VAZ 21099
Installation is carried out in the reverse order of removal. Now you can start disassembling and cleaning the carburetor.
Maintenance of the VAZ 21099 carburetor means removing, cleaning and adjusting this device after every 60,000 kilometers. When disassembling the carburetor, it is highly discouraged to unscrew the screws securing the air and throttle valves, as this can lead to jamming of the mechanism. In addition, do not press out non-twisting brass tubes.
First, we unscrew the solenoid valve and take out the fuel jet from it.
Then remove the carburetor cover by unscrewing 5 screws.
After that, use a thin screwdriver to push the axis of the floats out of the holders, take it out and remove the floats.
Carefully, so as not to damage, remove the cover gaskets.
We unscrew the needle valve.
Unscrew the 4 screws of the starter cover and remove it.
Carefully separate the diaphragm from the cover and remove the spring. Then we unscrew the fuel filter plug and take it out together with the filter element.
Gently pry the accelerator pump sprayers with a screwdriver and take them out.
Unscrew the 4 screws of the accelerator pump cover and remove it.
Carefully remove the diaphragm and the accelerator pump spring.
Unscrew the economizer cover screws and remove it together with the spring and diaphragm.
We take out the plastic plug with a screwdriver or a corkscrew and unscrew the mixture quality screw.
Unscrew 2 emulsion tubes combined with air jets.
Then we unscrew the fuel jets 1 and 2 of the chambers located under the emulsion tubes, and, turning the body over, shake them out.
We unscrew the screw that secures the wire and, carefully bending the lugs of the tip, remove the wire from the tip of the sensor of the screw for the amount of the mixture.
We unscrew the screw for the amount of the mixture.
Back to the table of contents
After disassembling the carburetor, it is necessary to soak the jets and the body of the device in acetone. After 2-3 hours, drain the solvent and blow out all holes with an air pump or compressor. Next, you need to inspect all springs and diaphragms, as well as the fuel filter and, if any defects are found, replace them. It should be especially noted that contaminants not dissolved with acetone can only be removed with a thin copper wire. Never use a screwdriver or metal wire for this purpose.
The assembly of the carburetor must be carried out in the reverse order of disassembly. In this case, special attention should be paid to ensure that the floats rotate freely on the axis and do not touch the walls of the float chamber. In addition, the gaps between the carburetor cover gasket and the projections on the lower surfaces of the floats should be uniform, no thinner than 0.5 and no thicker than 1 millimeter. Also, the valve needle must move without jamming in its seat, and the nozzles must be installed in the correct order. In addition, when assembling the accelerator pump, first lightly tighten the cover screws, then press the pump drive lever and only then tighten them all the way.
VIDEO
Many owners of VAZ 21099 are wondering how to adjust the carburetor of this car. In fact, the configuration of the node begins already when it is assembled. By selecting different combinations of air and fuel jets, the ideal combustion characteristics are achieved.
The scheme is as follows: when selecting characteristics, it is necessary to divide the calibration of the fuel jet by the calibration of the air jet:
if the result is more than 0.78, the combustible mixture will not ignite due to an excess of gasoline;
if the result is less than 0.533, the combustible mixture will not ignite due to excess air.
It should be borne in mind that you can reduce fuel consumption by installing an air jet with a higher calibration, for example, 145 instead of 125. If, on the contrary, you need more power, you must install an air jet with a lower calibration.
Air damper details
After assembling and installing the unit in place, adjusting the VAZ carburetor consists in setting the idle speed. This is done like this:
first, we warm up the engine to a temperature of 90-95 degrees (the air damper must be open, the gearshift lever must be in neutral);
then with the screw of the amount of the mixture (a wire is attached to its rear end), we set the crankshaft speed in the range of 750-800 rpm.
That's it, the idle speed is adjusted.
Regular maintenance of the carburetor of a VAZ 21099 car also includes replacing the air filter element every 5000 kilometers.
With the entry into the market of the front-wheel drive VAZ car, Solex carburetors are widely used. Despite the fact that these are reliable devices on a VAZ 21099 car, the carburetor periodically requires repair.
The location of the carburetor in a VAZ 21099 car
The photo shows a general view of the carburetor showing the main components.
The appearance of the carburetor of the car VAZ 21099 (1)
The appearance of the carburetor of the car VAZ 21099 (2)
Details and assemblies of the external body kit of the carburetor:
1 - a block performing heating of the throttle valve.
2 - fitting through which ventilation of the engine crankcase takes place.
3 - accelerator pump cover.
4 - solenoid valve.
5 - device cover
6 - hairpin securing the air filter.
7 - a lever that controls the air damper.
8 - cover protecting the starting device.
9 - sector where the throttle valve drive lever is located.
10 - connector of the EPHH sensor.
11 - screw for adjusting the amount of the mixture at idle.
12 - cover for protecting the economizer.
13 - device body.
14 - fitting through which fuel is supplied.
15 - fuel outlet.
16 - screw (arrow) regulating the composition of the mixture at idle.
17 - fitting through which the vacuum is supplied to the vacuum ignition regulator.
Fuel is supplied through the needle valve and the strainer to the carburetor float chamber, the level of which is maintained by the needle valve. From there, the fuel flows through the main fuel jets to the emulsion wells.
The fuel is taken from the emulsion well by the idle system, then it passes through the nozzles of this system, mixes with the air coming from the air nozzle and the wide part of the diffuser. The resulting emulsion enters through the hole under the throttle valve.
Through the intake manifold, the mixture prepared in the carburetor enters the cylinders of the car's engine.
Tip: When doing work with your own hands, do not use open fire and smoke.
The most difficult and important adjustment work in the carburetor is the regulation of the fuel level in the float chamber. Before starting work, disconnect the "-" terminal of the storage battery, remove the air filter.
The carburetor cover is removed.
The gap is measured between the gasket and the protrusions located on the bottom of the floats. It should be the same for two floats, and its value should not exceed one millimeter.
If the clearances are different or greater than the allowable value, and the mold connectors are not parallel to the carburetor cover, they must be adjusted. , bending the floats and the tongue abutting against the valve shank.The fuel level is visually checked. The cover is installed and fixed to the carburetor, the fuel supply and drain hoses are connected, the engine of the VAZ 21099 car starts up.
The bolt connecting the rod to the air damper drive lever is loosened.
The lever is turned until the air damper is fully open.
On the dashboard, the knob for the air damper is fully recessed.
Recessed dashboard air damper knob
The pull rod is fully pulled out and the bolt securing the rod with the air damper drive lever is tightened.
The handle of the air damper drive is pulled out to the stop, which should ensure the closing of the damper.
Air damper fully closed
If this is not the case, it is necessary to disconnect the thrust shell, and by moving it to achieve that the throttle valve is completely closed and fixed with a bolt.
If the nut of position 1 is tightened - the damper opens, the nut of position 2 is tightened - the damper closes.
Throttle valve drive adjustment
The accelerator pedal is pressed all the way. In this case, the flap of the first throttle chamber is fully opened.
The accelerator pedal is released, then the throttle valve of the first chamber should close, and the throttle valve control sector should move all the way to the other side. If not, the drive needs to be adjusted.
One nut is loosened, the other is tightened until the throttle valve is fully open and closed. The nut that was previously loosened is tightened.
More details on carburetor adjustment can be seen in the video.
Repairing a carburetor on a VAZ 21099 car means work that involves cleaning the main systems and replacing items that have failed. Need to purchase carburetor repair kit installed in a VAZ 21099 car.
Advice: If there is no need to remove the air and throttle valves, it is better not to remove them, a poor-quality installation in the future may, during operation, lead to their jamming.
On a VAZ 21099 car, carburetor repair begins with its disassembly:
The solenoid valve is unscrewed from the carburetor and the fuel jet is removed from its body.
The carburetor cover is removed and gently, without damaging the float, is set aside.
The float is removed. With the help of an awl, the axis that fixes it is squeezed out, and the part is freely removed.
The axle is removed and the float is removed
The gasket is removed.
The fuel valve is unscrewed.
The starter cover is removed and the diaphragm is removed.
The fuel filter is unscrewed from the side of the cover.
If necessary, the drive sector is removed with throttle valves ... To do this, the fastening nut is unscrewed, the ball with the spring is removed and the lever is removed.Gently pry off with a screwdriver and pull out the spray nozzles of the accelerating pump.
The accelerator pump is disassembled, the spring and diaphragm are removed.
Spring and diaphragm removed from carburetor (according to arrows)
The economizer of power modes is disassembled in a similar way. If a plastic plug is installed under the cover of the device, it is simply removed.
The emulsion tubes are unscrewed. The carburetor body is turned over, and the main fuel jets, previously unscrewed, are shaken out.
The wire of the sensor of the screw is removed, which regulates the amount of the mixture.
VIDEO
When performing all work on your own, the price of repairing a VAZ 21 099 carburetor will be significantly lower than the same work will be performed by a specialist. In the reference books for car repair, there is an instruction that makes it easier to carry out repairs at home.
The fuel jet is washed in acetone and blown with compressed air.
Replaced with a new gasket if damaged.
Attention should be paid to the plane of the connection between the housing and the cover. If the imprints from joining parts are not solid, this indicates wear on the mating surface. The operation of the fuel valve is checked. Its needle enters without jamming, a large lateral backlash must not be allowed.
The operation of the starting device is checked. Mechanical damage to the diaphragm must not be allowed , and the material from which it is made should not lose elasticity.
It is soaked in acetone, the fuel filter is blown through with compressed air.
The nozzle seals are inspected and, if necessary, replaced. Sprayers can be washed in acetone, blown out with compressed air and reinserted.
The pump cover is flushed with acetone.
Carburetor VAZ 21099 repair completed, assembly is carried out in the reverse order of disassembly.
On all cars of the "ninth" family, the engines were equipped with Russian-made Solex carburetors. The only exceptions are later modifications, on which the manufacturer installed injection power units. Far from being the most technically advanced vehicle, the Nine is still popular with motorists. This is largely due to the maintainability of the car and the relatively low cost of spare parts. In addition, a significant part of the restoration and adjustment work can be performed by the owner independently, including the adjustment of the VAZ-2109 and 21099 carburetor, its adjustment and cleaning.
This article will only consider those operations that every motorist can do with their own hands. Do not be afraid of a large number of manipulations - follow the instructions, be careful, and the tuning of the vaz carburetor will be no worse than in a service station. This will save you time and reduce maintenance costs.
Before you start adjusting the VAZ-2109 carburetor and other modifications of the model, you should ensure unhindered access to its parts by removing dirt. If the car is used regularly, the carburetor needs to be flushed externally only in case of adjustment procedures or in order to clean moving mechanisms when they are heavily soiled. External flushing is carried out using a brush, clean rags and a liquid capable of dissolving the oil (gasoline, kerosene or a special cleaning compound). This procedure does not involve removing the carburetor and consists of the following operations:
cleaning and washing the outside of the carburetor;
freeing the mesh filter of the float chamber from contamination;
removal of possible dirt and foreign particles from the float chamber itself;
cleaning the jets from possible deposits;
With external cleaning, the car owner should not have any questions, but as for how to clean the carburetor on the VAZ-21099 from the inside, this issue should be considered in more detail. In this particular case, we are talking about a float chamber. First you need to dismantle the air filter and remove the fuel hose. After the float chamber is dismantled, it is better not to touch the float itself, so as not to deform and damage the part. Also, do not turn the carburetor cover float downwards.
Experts do not recommend flushing the float chamber using a rag, since fibers may remain after it - it is more advisable in this case to use a rubber bulb, removing fuel residues from the bottom of the chamber with it. If necessary, remove any dirt on the bottom using a stiff thin brush and repeat the manipulation with the rubber bulb. Removal of contaminants from the main fuel jets is carried out under the influence of compressed air. If the compressor unit is not available, you can use a conventional pump. If the nozzle is too clogged, clean it with a thin copper wire. From this small guide, you were able to learn how to clean the carburetor and now you can proceed directly with the adjustment procedures.
According to the recommendations of specialists, the adjustment of the VAZ-21099 carburetor should begin with the float chamber. With this procedure, it is possible to check and establish the optimum fuel level. It is necessary to configure it by performing the steps below in stages:
Start the engine and turn it off after 2–3 minutes of operation;
After the air filter has been removed and the fuel hose disconnected, dismantle the carburetor cover (for this you need to unscrew five bolts). Place the lid on a clean surface with the floats facing up, being careful;
Using a vernier caliper, determine the fuel level in the float chambers: the distance between the body edge and the upper level should be 25.5 mm. If it turns out that the measurements do not correspond to the standard, you will have to make an adjustment by bending the tongue of the float bracket with repeated measurements of the fuel level;
Additionally, you can check how the edges of the floats are located relative to the mating surface of the cover and, if they are not parallel, adjust by acting on the arms of the floats.
Before proceeding with the adjustment of the damper itself, you should check the degree of cable tension. If it turns out that the cable sags or its tension is too strong, then setting the VAZ-21099 carburetor assumes the beginning of adjusting the drive in such a way as to prevent the damper from closing completely. To do this, use the key "13" and tighten the end nut on the cable sheath. Further, with the same key, you need to gradually loosen the locknut.
The optimum distance between the carburetor and the nut tip can now be set. It should be borne in mind that in the free position of the accelerator pedal, the damper must be completely closed. It remains only to tighten the nut and the setting can be considered complete.
First, the free play of the draft is subject to check - this will require dismantling the air filter cover. The drive settings can be considered correct only if the air damper is fully opened in the “recessed” position of its handle. If you find deviations from the norm, read the instructions on how to set up the carburetor on the VAZ-2109 by performing a series of adjusting manipulations.
The drive setup process looks like this:
Loosen the bolt that secures the link to the arm. After that, you need to drown the drive handle and fully open the air damper by acting on its lever;
Using pliers, pull the cable out of the sheath and tighten the fixing bolt;
Next, you need to check how the damper closes when the handle of its drive is extended. Closing must take place to the end, otherwise you will have to repeat the adjustment operations.
The adjustment should be made until you achieve full opening and closing of the damper in the extreme positions of the drive handle. Make sure that the lever does not come into contact with the cable jacket in any position.
So, at this stage, you learned how to adjust the carburetor on a VAZ-2109 by setting the optimal working position of its throttle and air dampers. Now let's move on to adjusting the starting device and idle speed.
The most accurate setting of the starting device by setting the values of the starting clearances requires removing the carburetor from the machine. But first you need to make sure that the diaphragm of the starting device is intact. To do this, after unscrewing the four bolts, remove the cover and inspect the diaphragm. If it is suitable for further operation, you can continue to make adjustments, otherwise the part will have to be replaced.
VIDEO
Below is a list of alternately performed operations, which describes how to adjust the VAZ-21099 carburetor by adjusting the starting device:
First you need to close the air damper by turning its lever;
Using a screwdriver, sink the trigger stem;
The gap formed between the chamber wall and the damper must be measured, after which its value must be compared with the calibration data (indicated by the manufacturer individually for each carburetor model and car);
If the obtained data does not correspond to the nominal value, adjustments should be made. The locknut, which is located on the body of the accelerating pump, should be loosened and the adjusting screw with a screwdriver should be turned until the required clearance is set;
Now, having closed the air damper, it is necessary to measure the throttle valve clearance of the first chamber. Check the obtained data with the calibration table. If necessary, set the desired clearance value by turning the throttle adjusting screw.
It is likely that at this stage the tuning of the VAZ-2109 carburetor can be completed. If you need to adjust the idle speed or achieve a reduction in fuel consumption, you can read the corresponding manual below.
Idling adjustment is the final step in the instructions on how to set up the carburetor on a VAZ-21099 and is carried out with a warm engine and current consumers (heater, fan or headlights). During the setup process, follow the sequence of operations described below:
Stop the engine and screw in the quality screw all the way, then unscrew it three turns;
Start the engine, open the air damper and, with the current consumers turned on, set the number of crankshaft revolutions within 750-800 per minute using the number screw;
By turning the quality screw, bring the revolutions to the maximum value, then, with the quantity screw, set to 900 rpm;
Further, with the help of the screw, the amount should be reduced to 800 rpm. Continue turning it until the engine starts to run unstable. After that, unscrew the screw 0.5–1 turns;
Now, by manipulating the quantity screw, it is necessary to set the optimal rpm values, which for the winter period are 900–1000 rpm, and for the summer period - 800–900 rpm.
VIDEO
If you did everything correctly, then the adjusted carburetor ensures stable operation of the power unit within the manufacturer's recommended rpm range.At the same time, it is important that fuel consumption is minimal and only such a setting on the VAZ-2109 is considered correct.
The carburetor installed on the VAZ-21099 is responsible for the process of mixing gasoline and air in exact proportions. Fuel jets are used as control instruments, the performance of which depends on the length and diameter of their through holes. Using jets with different characteristics, you can adjust the saturation of the working mixture. Therefore, if you always wanted to know how to reduce the fuel consumption of a VAZ-2109 carburetor, are ready to experiment with your own car and adjust the carburetor yourself, stock up on different nozzles and use this article as a guide.
Serial production of the VAZ 21099 car began in the late 80s. Ninety nine, sometimes just nine, and also, to be honest, a trough and a basin - as soon as the people do not call this product of the domestic auto industry. Nevertheless, despite the irony and certain problems, the model became widespread and popular.
The car, which has a history of almost four decades, is still considered one of the most successful VAZ assemblies. Until 2004, all VAZ 21099 models had a carburetor type of engine, and only after 2004 manufacturers replaced this device with an injector. So the carburetor 99-tka, a symbol of the dashing 90s, is today found on the roads of the post-Soviet countries no less often than modern cars.
The car has a front-wheel drive, a 4-cylinder 1.5 liter engine. A VAZ car is capable of accelerating to 160 km / h, with its 70 hp. Some models have a 1.5i engine with 76 hp, although there were not many such cars produced. The carburetor model 21099 is very economical, the average consumption of the VAZ 21099 reaches 7–7.5 l / 100 km. Fuel consumption on the highway with high-quality fuel and average revs - 5.5 liters.
The carburetor VAZ 21099 is technically very well made and is not picky about the quality of the fuel. The device consists of 2 chambers in which the fuel is distributed and further injected into the car engine. The operation of the first chamber of the carburetor provides a smooth transition from idle to throttling. The main process of supplying the fuel mixture takes place in the second chamber of the device. The fuel in the chamber rises through the pipes and mixes with air.
The main action in the operation of the second chamber is performed by the econostat - when the throttle valves are open while driving at high speed, it enriches the combustible mixture. The starting device is responsible for preparing a saturated combustible mixture when starting a cold engine. The air damper in this device is biased and opens with a stream of air, as a result of which the throttle spring is pulled back and ensures uniform mixing of the mixture.
A device such as an economizer is responsible for idling in a VAZ 21099 carburetor. It consists of a switch mounted on an adjusting screw, a solenoid valve, a control unit and a switch. The economizer shuts down at forced idle, when the vehicle engine is braked sharply, when shifting gears, and when the engine is running on a slope.
This device is very useful as it prevents the emission of carbon monoxide into the atmosphere. When operating at forced idle, the engine speed increases and can reach 2100 rpm. In this case, the solenoid valve is triggered, which acts on the power control unit and turns it off - the fuel supply in the idle system is stopped.
VIDEO
Very often, the owners of 99 VAZs are faced with the problem of poor engine performance, which can occur both in warm and cold seasons. One of the main reasons for this problem is carburetor malfunction.Symptoms arising from malfunctions are very easy to notice - the car does not start well, the revs on the tachometer float, unusual sounds in the form of popping can be heard from the exhaust pipe.
While driving, when changing gears, the VAZ 21099 may stall. During acceleration or release of the gas pedal, jerking and dips in work are possible. Fuel consumption is noticeably increased.
If you find problems in the operation of the VAZ 21099 carburetor, then in case of minor breakdowns it can be repaired or replaced with a new one if the problems are more serious. Carburetor repair is a delicate matter and requires experience in the work. For self-repair, you will need a standard set of tools and, preferably, a book on the maintenance and repair of this type of device.
VIDEO
The VAZ 21099 carburetor is located under the car air filter cover. If you buy a new carburetor, then you should not try to disassemble or adjust it, since it has already been put up for the required job from the factory. Every time you remove or replace the carburetor, it is worth rinsing it out, as dirt can enter the internal passages of the carburetor.
To get the carburetor, you need to unscrew the air filter cover with a 10 key and slide the four latches that hold it. Next, loosen the clamps that are attached to the air filter, and unscrew the four studs that hold the filter and carburetor housing. After that, you need to loosen the clamps of the carburetor fuel system and carefully remove them. Next, turn off the contact wire of the solenoid valve and unscrew the carburetor cover. It must be removed in such a way that it does not catch on the walls of the float chamber.
Put all the unscrewed screws in a separate box - the search for lost fasteners will take a lot of time, and not every store has them in the public domain. After disassembling the carburetor, the positions of the floats in the chamber must be checked and, if possible, adjusted. The chamber floats should be parallel to the imprint of the chamber walls, this parallelism is clearly visible on the cardboard lid gasket. If it is not there, then you need to dilute or reduce the floats to the desired result.
After performing this procedure, the floats should move freely in the chamber and not touch its walls. The distance between the projections on the floats and the cardboard spacer should be 1 mm on average, it is best to measure this distance with a caliper.
If there are significant deviations, then the fuel level in the chamber is incorrect. The fuel level should correspond to the red stripes that are in the chamber, it is best to look at them immediately after removal so that the gasoline does not have time to evaporate. You can also navigate along the ribs in the fuel chamber, for this you need to bend or bend the float tab and pump fuel into the chamber manually. This method is also very good and has proven itself in practice.
VIDEO
Devices such as jets control the required fuel supply from the carburetor to the engine. In some cases, the repair consists precisely in their replacement. The working jet must have three identical round holes, with prolonged operation they wear out and can be elongated. The hole in the middle of the nozzle head must be clean, it can get various debris from low-quality fuel, or from worn fuel hoses. Carefully inspect the sealing gum on the nozzle - if any tears are found, then replace it.
Carry out these actions with each jet. After completing these work, screw them back into the camera - this should be done with your hands, and only in some cases with a screwdriver. A very common problem in the operation of the carburetor is creating a poor contact in the solenoid valve. This happens due to the oxidation of the terminal to which the wire is attached, so you need to strip and process it. In some cases, there is a breakdown in the switch, it may fail, so you have to replace it with a new one.
Video (click to play).
One of the main devices in the carburetor is the fuel booster, which distributes fuel to the chambers. In practice, there are very few cases where the problem is in him, but you should not exclude him. The accelerator should be flushed or replaced if possible. It is best to clean your carburetor every six months. The cleaner is available at any auto shop. This procedure will significantly extend the life of your carburetor. If you are the owner of a VAZ 21099 with an injector, then on our website there is an article about this model.
VIDEO
