How to adjust the carburetor of all VAZ models. Adjustment of the carburetor VAZ-2107. Adjusting the idling speed of the carburetor VAZ

Adjustment of the carburetor VAZ 2107, as, indeed, all other similar models, is one of the actual topics, not only in the Internet network, but in everyday life. The cars of this brand in its time was released very much, and it is not for nothing that the people for their reliability and design were nicknamed "the Soviet Mercedes". Because of their so impressive amount of cars with an injector fuel injection system, they can not yet drive them out of our roads. That is why adjusting the carburetor VAZ 2107, 21099 and other modifications for a long time will be an urgent problem for some drivers.

General rules

Adjusting the carburetor VAZ greatly affects the fuel consumption, as well as on the uniformity when the engine is running, its acceleration. It directly affects premature wear of certain parts. The ignition of the carburetor VAZ, the level of fuel in the float chamber, the calibration of the jets or their throughput, as well as the condition and operation of some basic mechanisms are checked and, if necessary, adjusted. In addition, in some cases, in the carburettors, an additional position is set for the adjusting needle in the main jet. Adjustment of the carburetor VAZ 2107 must be carried out at least once a year. It is desirable that this work produced by a specialist in the workshop. This is because the adjustment of the carburetor VAZ 2107 or other models of this car manufacturer is similar to setting the piano for good sound. At the same time, if this musical "gentle" instrument will not play well, then nothing terrible will happen. But if the carburetor of the car will not work well, it will lead to a large fuel consumption, which means, to excess costs. This element in the power system of the car engine, inside of which, due to mixing of fuel and air, a mixture forms, begins to function poorly as a result of clogging of its calibrated holes and other components. That's why you need constant maintenance and adjustment of the carburetor. VAZ 2101 from the moment of release from the conveyor was completed with this precise and complex device of the brand "Weber", manufactured at the Dimitrovgrad Automobile Units Plant.

What is a carburetor, and what is it for?

These components of the car with the injection system are designed to mix the air with the automotive fuel. As a result, a fuel-air mixture is formed in certain proportions. As a rule, if the adjustment of the carburetor VAZ 2107, 2108, etc. Is carried out correctly, then for each gram of gasoline should be about fifteen grams of air. Such a composition is called stoichiometric. In our country, the most popular carburetors are the series "Ozone", "Solex" or "DAAZ". They are used on the domestic "seven" and "eight". Due to such a wide distribution of carburetors VAZ 2108 and VAZ 2107 they can be repaired even in the garage, without resorting to help in branded services. Some motorists carry out not only adjustment of the carburetor VAZ 21083, but also its repair. This became possible due to the large amount of necessary information on the Internet, in books and car magazines, and also due to a fairly simple design of the device.

Carburetor work

It assumes accurate dosing of fuel and air. And this means that you need a carburetor adjustment. VAZ 2105 and later models control this process with special plugs - "jets". Their "performance", as is known, is determined by both the length and the size of the diameter at the opening, and by the difference in the inlet and outlet pressures. There is a non-linear relationship between the cross-sectional area and the capacity of the jets. This is the basis when adjusting the carburetor VAZ 2110 and earlier models. This means that by increasing the cross-section, say, by ten percent, you can get increased by twenty five percent throughput. Knowing this little trick, many motorists try to increase the power, but at the same time reduce the fuel consumption of the car.

Where to begin

Adjustment of the carburetor VAZ 2103 and later marks begins with the procedures included in the list of its maintenance. Firstly, it is washing or cleaning, which is a prerequisite for the simple reason that it is much more pleasant to work with a clean appliance. In addition, cleaning the carburetor elements is very positive for its performance. In this case, the strainer is flushed with a float chamber and jets, both air and fuel.

Float chamber and fuel level in it

Adjustment of the float mechanism is not very complicated, but a fairly responsible stage. It is divided into three stages. Correct adjustment of the carburetor VAZ 21099 and other models is an adjustment of the amount of fuel in its float chamber. For this purpose, a special cardboard pattern of six and a half by fourteen millimeters is prepared. Then, having unscrewed the cover of the carburetor, the slowest closing of the opening for supplying fuel to the needle valve is determined by the highest level. Then the removed hood is placed vertically, so that the float holder is able to touch the ball from the spring-loaded valve, and only approached and in no case pressed. Then it is removed in the opposite direction and the template is substituted. At the same time, the distance corresponding to the normative one should exactly be equal to fourteen millimeters with very little error. Otherwise, by setting the special stop on the float arm, the required distance is set.

Checking the operation of the starter

Adjustment of the carburetor VAZ 21099 at this stage is to quickly and qualitatively correct the function of the mechanism of the launch unit. To begin with, experienced motorists prepare a short piece of wire with a diameter of 0.7 or 0.8 millimeters, as well as a template made of fairly dense material, with a width of up to five and a half millimeters. Then the air filter of this car is removed, and then the carburettor is completely cleaned, for which its damper is completely closed. In this case, the tail of the thrust, connecting the stem on the launcher with the lever on the air damper, must necessarily have a position such that, without moving anything, one could take a position at the very end of the groove. Adjusting the carburetor VAZ 2105 requires mandatory testing of the open throttle. For this, the device is removed from the machine. Then, on the carburetor located outside the car, counterclockwise until it stops, the three-arm lever turns. Then, using a pre-prepared wire, a gap is checked, which in normal condition should correspond to a maximum of 0.8 millimeters. Otherwise, you need to bend the rod or move its tip into another hole.

No-load adjustment

This procedure is more appropriately entrusted to a specialist. But if the car owner is confident in his capabilities and wants to do it himself, he will certainly need a gas analyzer with a multimeter. Adjustment of the idling of the carburetor VAZ of any model is carried out in the engine in the warmed state. With this mode, the motor must be in the range of eight hundred twenty to nine hundred revolutions per minute. At the same time, it is mandatory to adjust the ignition timing first. First, the devices are connected. In this case, the multimeter is connected to the frequency demonstration mode when the engine is running. One probe connects to the mass, and the other to the primary winding on the ignition coil. Then the gas analyzer is turned on, its sensor is pre-inserted into the exhaust pipe of the car. Then the engine is started, as a result of the rotation of the screw, the required amount of rotation is achieved for the amount of mixture: the set limits are from eight hundred twenty to nine hundred revolutions per minute. And with the rotation of the propeller of the quality of the mixture formation, the carburetor VAZ 2106 is adjusted , more precisely the amount of CO in the exhaust gas, during which the engine speed will change. The operation is repeated until the regulatory parameters are set. Sometimes, when adjusting the carburetor "Ozone", VAZ 2107 for example, creates a situation where even after several calls the result still does not match the required. In this case, it is necessary to pay attention to the plastic special bushings pressed on the adjusting screws. This applies only to new carburettors. For example, the screw for adjusting the quality of the fuel mixture by the manufacturer is limited for rotation up to a maximum of fifty degrees, and the quantity is up to ninety. Such parameters are provided so that during the entire warranty period of the car factory settings are not accidentally lost. It is necessary to remove these two bushings and begin the adjustment anew. And if everything is done right, then after a sharp depression of the gas pedal, and then of its sudden release, the engine starts to pick up very clearly. And after their reduction, it does not stall.

Calibration of jets

The throughput of these parts of the car's running gear directly affects the composition of the combustible mixtures. At the same time, the deviation from the manufacturer's specified value or parameters, calibers, diameters for jets to the side greater or less makes not only the performance of the engine of the car less qualitative, but also leads to an increase in the consumed fuel. With a reduction in the cross-sectional area of the jet or the depletion of the mixture, this may lead to a sharp deterioration in the driving qualities and acceleration of the car. The throughput of these parts is measured by the volume of water flowing through them during one minute at twenty-degree temperature and under a meter head of water column. It changes with time. Slightly increases the cross-sectional area of the jet, especially with frequent use of low-quality gasoline. In addition, while the engine is running with a large flow of gases through the piston rings, this parameter is somewhat reduced due to the formation of resin deposits in the calibrated holes.

Air damper actuator

Adjustment of the carburetor involves several adjustments. In particular, this also applies to the operation of the drive on the air damper. The order of the works is as follows: first you need to remove the air filter of the car. Then, holding the handle of the same flap, start gently moving it in the direction opposite to itself. Do this until the vertical position is reached. The air damper itself must also be in the same position. If this is not achieved, then you need to adjust.
While holding the bushing from turning, and for this at hand you need to have a seven-millimeter key, the screw, through which the thrust was fixed at the air damper, is weakened. After the unscrewed part must be tightened in the opposite direction. In the fully retracted position of the handle, the inlet on the throat should be closed by the air damper. That's all. And then in the reverse order is installed in place and the air filter removed.

Types of carburettors

Experienced motorists who have been driving the Zhiguli for several years already know that the carburetor VAZ 21213, which does not cause any difficulties, is better to buy from the DAAZ manufacturer. It is best for the VAZ of this model suited devices from the "Solex" series. Their feature is that the design of these carburetors is suitable not only for front-wheel drive vehicles, but also for almost all brands. In addition, their necessary parameters in the preparation of the fuel-air mixture are achieved by using special sets of jets and diffusers of certain sizes, chosen depending on the volume of gasoline engines of the car. Unlike the Ozon carburettors in Solexa, the connection between the throttle valves in the first two chambers is mechanical, not gas-dynamic. Another feature of the latter is that they have a conventional system when idling. Therefore, when adjusting the carburetor of this brand, the screw for the amount of mixture actually opens the throttle valve in the first chamber.

In conclusion

During operation, the carburettor does not need regular external washing. Such a need arises only when the moving mechanisms are heavily soiled, as a result of which the mobility of the parts is impaired. In addition, "bathing" is necessary before adjustment. Of course, there is a periodicity for the implementation of preventive auto-actions. And if, for example, on the "Lada" of the seventh model carburetor repair can be made only when the old unit fails, then, without waiting for a serious breakdown, the valves must be adjusted. VAZ 2107, the carburetor of which should be checked for clearances every maximum of fifteen thousand kilometers, otherwise it can stand in the middle of the road, and then without the help of the evacuator of the "iron horse" you can not drive home. That's why it will be much easier to spend a few hours to independently check it or take the car to a service point.

Nuances

For internal cleaning of the carburetor, when adjusting it, the use of brushes and rags is not recommended, since fibers or bristles can accidentally enter the jets. To care for this component of the running gear of the car manufacturers produce special preparations. Some experienced drivers use for this purpose gasoline or kerosene, as well as a solvent, sometimes compressed air. Only by cleaning the carburetor, you can proceed to adjust it. Be sure before taking such a serious interference in the course of his work, you must first hundred percent to make sure that all the malfunctions are connected with this unit, and not, for example, with the ignition or fuel supply system in which the fine filter of the pump can clog etc. And the main thing: in spite of the expansive-assertive seizure of the automobile market by the injector engines, who know a lot about cars and have a long experience, drivers still prefer to have a carburetor on board their "iron" friend. After all, it is a guarantee that the car will start even in a severe frost. And in order for such a necessary device to work properly, you need to regularly monitor its condition: clean and, if necessary, adjust.