In detail: vaz 2101 do-it-yourself carburetor repair from a real master for the site my.housecope.com.
Adjusting the VAZ 2101 carburetor is a very important procedure, without which any car cannot function normally, and even more so, such an age one as a "penny". It is important to note that carburetor adjustments have been taught for more than one year, and there is even such a profession - a carburetor, but we are firmly convinced that with a certain package of knowledge and without fear of "getting your hands dirty", absolutely every car owner can handle it. It is for this reason that we decided to compile a sufficiently detailed instruction for you so that you can save your money and continue to enjoy trips on real domestic classics. If you are tired of adjusting and repairing the carburetor, as well as the solid fuel consumption of your penny, you should pay attention to the eleventh generation Corolla cars at toyota-ua.com/models/new-corolla. The 2013 Toyota Corolla delivers significant fuel economy thanks to an injector that provides consistent, efficient engine operation and less polluting emissions.
Correct the throttle position
The first step in adjusting the carburetor on a "penny" is to set the correct throttle position. To do this work correctly, you must perform the following simple manipulations:
Step 1: in manual mode, rotate the throttle control lever counterclockwise to fully open.
Step 2: measure the distance to the primary camera, it should be in the range from 12.5 to 13.5 millimeters. If it is not, correct it by bending the tendril of the traction.
Video (click to play).
Step 3: measure the value of the maximum opening of the throttle valve, it should be in the range from 14.5 to 15.5 millimeters. If this is not the case, then you should correct it by tightening the pneumatic actuator stem.
Correcting the starting device
At the second stage, adjusting the VAZ 2101 carburetor consists in setting up the starting device. As in the previous case, we will provide step-by-step instructions that will help you easily and simply cope with the task.
Step 1: in manual mode, rotate the secondary throttle lever counterclockwise to close.
Step 2: check that the tip of the traction arm is firmly attached to the primary throttle shaft and is located at the very end of the trigger stem. If you find that this is not the case, then you will need to correct its position by bending the rod.
Important! You need to bend the rod very carefully, since too much pressure can break it off.
Adjusting the performance of the pump accelerator
The third stage of adjusting the operation of the carburetor on the VAZ 2101 is to control and debug the pump accelerator.
You need to start working with it with a performance check. To do this, you must collect the fuel in a beaker, which is depleted in 10 full cycles of the throttle control lever. You you should get from 5.25 to 8.75 cubic centimeters of fuel... If this is not the case, then you will need to carry out a full pumping of the pump 9-10 times, and then re-measure. If this does not help, then you will have to completely change the accelerator of the fuel pump.
We set the correct idle speed of the car engine
Adjusting the VAZ 2101 carburetor at the final stage consists in setting the correct engine idle speed. To do this, you must follow these simple steps.
Step 1: warm up the engine for 10-15 minutes.
Step 2: Stop the engine and close the quality screw and the quantity screw as far as it will go.
Step 3: loosen the quantity screw 3 turns and the quality screw 5 turns.
Step 4: start the engine and set the engine speed to 800 rpm with the number screw.
Step 5: start to tighten the quality screw slowly, thereby reducing the enrichment of the fuel mixture. This should be done until the turnover starts to fall.
Step 6: Unscrew the quality screw half a turn and fix.
As you can see, adjusting the carburetor is as easy as adjusting the VAZ 2101 valves. The main thing is care and accuracy, and you can easily cope with the task yourself.
From time to time, the owners of carburetor Zhiguli are puzzled by uneven engine idling, failures during acceleration and poor starting. One of the reasons for these problems is a malfunction of the fuel system, in particular the carburetor.
A large number of classic Zhiguli models use a VAZ 2101 carburetor in various modifications. There are several modifications of the produced carburetors, which differ not only in the size of the installed jets, but also in the presence or absence of a vacuum corrector system.
The VAZ 2101 carburetor of all modifications is intended only for the VAZ 2101 and 21011 engines, where the ignition distributor is installed without a vacuum corrector. On cars of a later release, systems are installed that are already equipped with vacuum correctors. It should be remembered that the use of carburetors going to VAZ 2101, 21011 and 2105 engines without a vacuum regulator cannot be used on other engines and vice versa. The carburetor VAZ 2103 and VAZ 2016 are similarly used - only on models where there is no vacuum corrector.
Maintenance, adjusting carburetors at home is a rather complicated procedure that requires certain skills, knowledge and tools. You can independently adjust the idle speed, replace the gaskets, clean the jets, fuel channels, and visually check the operation of the accelerating pump, replace it if necessary. But it is advisable to carry out the final revision with adjustment in a car service that has diagnostic equipment to check the level of carbon monoxide in the exhaust gases.
Diagram of the carburetor body on the VAZ 2101
The device of carburetors is fundamentally little different and consists of the following systems:
Fuel level maintenance and regulation system;
Engine start and warm-up system;
Idling system;
Accelerator pump;
Main dosing system;
Econostat systems.
The float in the carburetor's float chamber is responsible for the fuel level. Both excessive and insufficient fuel levels will negatively affect engine performance. This malfunction occurs mainly due to the leakage of the fuel valve, which occurs quite often due to the poor quality of fuel with fuel filters. Cleaning the valve or replacing it in the absence of tightness is carried out after visual inspection, which is a fairly simple operation.
Second-hand carburetor for VAZ 2101
The starting and idling systems are the most vulnerable mechanisms. Poor engine starting is often caused by an incomplete choke. It is eliminated by cleaning with lubrication of its drive. In addition, it is necessary to check how it opens slightly at the moment of starting, which provides the mechanism of the starting device.
If the idle speed is unstable, it is first necessary to check the electric idle valve by applying voltage to it. The absence of clicks will immediately indicate its defect, which will require replacement of the assembly. It is also possible that dirt gets into its channel. It is imperative to clean the nozzle of the valve, then clean the channel.
The idle speed is adjusted as follows.First, you need to achieve the required engine speed with a screw of the amount of fuel mixture (for VAZ engines, this figure is 850 rpm). Then, with the quality screw, it is necessary to find such a position in which the engine will develop the highest speed. If its revolutions are more than 850 rpm, then it is necessary to reduce them with the number screw, and then achieve maximum revolutions using the quality screw. After the rpm is set at 850 rpm, it is necessary to tighten the quality screw until the engine starts to shake slightly. Then unscrew the quality screw back about a third or a quarter of a turn, achieving the most stable motor operation at the leanest mixture.
Another common problem is a malfunction of the accelerator pump, which is manifested by dullness or jerking during acceleration. The defect is checked visually. It is necessary to sharply open the throttle valve, checking the presence and strength of the gasoline jet, which should be uniform for 3-4 seconds. If this is not the case, then it is necessary to check the sinking of the valve or clean the jet.
Perhaps these are the most common simple malfunctions and methods for their elimination. If you cannot resolve them on your own, then it is recommended to contact a professional service.
Owners of the VAZ 2101 model often notice carburetor malfunctions. This leads to increased fuel consumption, unstable engine operation and other troubles. Carburetor repair and adjustment is a simple matter, you can do it yourself without the help of specialists.
It is fairly easy to understand that the carburetor is set incorrectly. This does not require special diagnostics, the main signs of poor performance are the following:
The engine stalls at idle speed.
Clogged spark plugs, making it difficult to start the engine.
Increased fuel consumption and gasoline leakage.
It is worth noting that the above malfunctions are not always associated with the carburetor. For example, unstable operation of the power unit may be associated with a breakdown of the connecting wire that goes to the accelerator pedal. Therefore, before starting the adjustment, you need to make sure that other components and mechanisms are working properly.
As a rule, carburetor adjustment is required after 7,500-8,000 km. If the car is little used, then this work should be carried out at least once a year. Before tuning, clean the candles, distributor well and check the wiring.
Tip: During repairs, new cuffs and jets may be needed, these parts should be purchased in advance.
Adjustment does not require much physical strength, the main thing is to do everything accurately and accurately. We prepare the tool:
set of wrenches;
flat and Phillips screwdrivers;
rags;
latex gloves;
toothpicks;
solvent;
pump or can of compressed air.
The first step is to remove the top cover, float and vacuum valve from the carburetor.
Unscrewing 4 nuts, remove the top cover of the carburetor and clean the chambers
The inner chambers must be well cleaned of dust and soot residues. We clean the small holes with air using a can or a regular pump. We warm up the engine and put it on the handbrake.
Screw 1 adjusts the amount of gasoline supplied, screw 2 adjusts the position of the throttle valve
Advice: The engine idling should be smooth and stable, do not tighten the quality screw tightly, as with a sharp fuel supply, the engine will simply stall.
