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How to set up the carburetor on the VAZ 21099

Carburetor Solex

carburettor important and responsible part of the work on those. vehicle maintenance.

To accomplish this requires certain skills and expertise, without which this work is best left to professionals.

On all front-VAZ models, in t. Ch. on VAZ - 21099, set the type of carbs "Solex". The only difference in the diameters of the nozzles depending on engine size. The main adjustment is to adjust the carburetor idle.

Carburetor adjustment is made only when the proper timing and correctly established moment of ignition

Before starting adjustment work is necessary to remove the air filter, to disconnect a cable choke valve, solenoid wire idling and fuel hoses.


To perform this work will need: spanners 8, 10, 13, cruciform screwdriver analyzer.

Adjusting the carburettor

At the beginning of the adjustment is checked andset fuel level in the float chamber. A ruler or caliper measure the distance from the level of the fuel to the carburetor plane of the connector, it should be 25.5 mm.
To adjust the fuel level unscrewfive screws with a screwdriver and remove the carburetor cover. Turn the lid horizontally, floats upward. The gap between the lower ends of the floats and gasket must be the same and be 0.5 - 1 mm. If the gap is not the same as or different from the norm, adjust podgibaniem arm floats.
Further adjustment is made startingdevice. Before adjustment, check the condition of the diaphragm, for it unscrew four screws and remove the cover. The diaphragm defects must be replaced.
Fully close the choke and click onstock starting device until it stops. Choke should be parted by the amount of starting backlash - 3 mm. In contrast to the specified value, loosen the lock nut on the cap screw and adjust the gap.
After installing the carburetor cover in placeneed to adjust the choke actuator. To this end, fully open the choke and fully sink the choke knob to drive the car.
Pull the drive rod of the shell until it stops andTighten the screw on the arm valve drive. Pull the drive handle in the cabin, and the air damper should be closed completely. Again drown the handle - the flap should be fully open.
If this does not happen, it is necessary to release the bolt fixing shell thrust and move the skin to the air damper is fully opened and closed.

Adjust idling

Idle speed control achieve the minimum content of toxic substances in the exhaust gases. The adjustment is made in a warm engine with the air filter.

Since the adjustment of idling takes place by means of the gas analyzer, the job better hold on the station. service

Turn the plastic screw adjustment amountmix set idle value of 750 - 800 rpm. Gas analyzer measured the CO content in the exhaust gases. The rate is 1%, with a tolerance of 0.3 percent.
If necessary, the quantity of CO is regulated by the quality of the screw, closed disposable plastic cap. When screwing the screw CO content decreases, loosening - is increasing.
Then screw the number of returns toidle speed and then check the CO content. The adjustment is repeated until optimal results. After adjusting rapidly press the gas pedal - the engine should increase speed without failure, and after releasing the pedal should not stall.

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