Carburetor design VAZ-2101 Zhiguli 1970-1983

Setting up and checking the launch system

This system is used to start a cold engine and ensures its warming up by approximately 1.5-2.5 thousand revolutions.
When the engine warms up, the system is turned off manually and the engine starts idling at a speed of about 800-900 rpm. The second important gap is between the air damper and the wall of the primary chamber. When the damper is closed, this gap should be about 5-5.5 mm. It is adjusted by a screw, which is located under the brass threaded plug on the body of the vacuum air damper position regulator. The functionality of the starting system is checked with the air filter installed and the engine cold.

Throttle valve adjustment

Adjusting the VAZ-2101 carburetor begins with adjusting the throttle valve. This is a simple procedure. It can be done in three stages. Manually turn the damper control lever counterclockwise. It opens completely.

The distance to the primary chamber is measured. The carburetor design suggests that this figure is 12.5-13.5 mm. If the result is different, you need to bend the rod antennae. Throttle adjustment involves determining the opening value of the throttle valve. It should be 14.5-15.5 mm. Otherwise, you will need to tighten the pneumatic drive rod.

Step-by-step carburetor settings

Design and adjustment of the OKA 11113 carburetor
So, you can proceed directly to the setup procedure itself. Let's consider its step-by-step implementation.

Stage 1: Cleaning

Unscrew the fastening bolts holding the carburetor cover and remove it

There is no need to rush here; it is very important not to damage the bracket tongue and the float. Otherwise, the setup procedure will end before it even begins.

Then, turning the lid over, remove the fuel filter fasteners, take it out and rinse it thoroughly, after which we move on to the float chamber, which should also be cleaned and rinsed.

The jets, both air and fuel, are also cleaned, and exclusively using copper wire, after which they are washed and blown with compressed air. Various solvents are used as washing liquid - toluene, acetone, special washing liquids or gasoline.

Stage 2. Adjusting the float mechanism

Initially, it is necessary to find out the condition of the float, aligning, if necessary, the bracket that secures it. This will ensure a smooth immersion of the float into the chamber.

After this, you should start adjusting the needle valve in the closed position

This is quite simple to do - just open the chamber cover, move the float to the side and carefully tug the bracket tongue, ensuring that the gap between the cover gasket and the float itself is about 6-7 mm. In the immersed position of the float, the distance should be 1-2 mm

If more, it means the needle has become unusable and needs to be replaced. In the open position of the valve, the gap between the needle and the float should be at around 15 mm.

Stage 3. Setting up the launch system

At this stage, it is necessary to perform the following operations:

Remove the air filter;
Start the engine and pull the choke;
Open the air damper about a third;
Set the speed to somewhere around 3200-3600 rpm;
Lower the damper into place, setting the rotation speed to 300 rpm less than the main parameter.

Stage 4. Adjusting the idle speed of the car

It is necessary to proceed to this stage only after the car has warmed up. Using the quality screw, the maximum speed value is set, while the quantity screw is not used. After this, using this screw, a value is set that is 100 turns higher than the required parameter. And finally, the engine starts and the desired speed is adjusted using the quality screw.

Summing up

At this point, work on adjusting the carburetor installed on the VAZ 2107 model is completed. We hope that our tips will help you carry out this procedure correctly and ensure long-term and uninterrupted operation of your car.

https://youtube.com/watch?v=-iYxxRFBWUo

Adjusting the starter

When setting up the VAZ 2107 carburetor, you need to adjust the starting device yourself. It is designed to confidently start a cold engine. When properly adjusted, the mixture is twice as saturated with fuel as when normally feeding a hot engine.

A little theory about the starting device

If we look at the carburetor from the side, we can clearly see the channel through which vacuum is supplied to the opener body:

With the carburetor removed, if you look at it from the top, you can see the air vacuum supply channel:

On the disassembled carburetor you can see all the details of this diaphragm starting device:

The picture below schematically shows the starting device of the carburetor of the 1107010 family:

Let's figure out how the trigger mechanism works. By pulling the choke lever, the driver brings the starting device into a cocked state. The following actions occur:

The three-arm lever is “cocked” with a cable counterclockwise;
The telescopic rod is activated;
The rod turns the air damper.
The second arm of the lever presses on the throttle valve axis of the first chamber.
The air flow damper closes completely. The throttle valve of the first chamber is slightly open for starting, creating a starting gap

Let's start adjusting the starting device

To adjust the starting device yourself, the first step is to remove the carburetor. Further:

Turn the choke lever to the closed position. In this position the device is turned on.

Now turn the carburetor over and measure the gap between the wall and the edge of the throttle valve (chamber 1). For VAZ 2107 carburetors, this gap is 0.85-0.9 mm. The gap can be measured with a feeler gauge or calibrated wire:

To adjust the gap to this range, you need to bend the drive rod on the throttle valve.

After this, we establish a gap between the channel wall and the edge of the air damper from below (in Fig. 2 below it is designated “A”). To do this, close the damper again, i.e. “cock” the device. Create an imitation of rarefaction of air by recessing the starter rod:

Picture 1

Now the rod has pulled the rod along the slot, and as a result the damper opens. Gap “A” should be 5-5.4 mm.

Figure 2

To adjust this gap, you need to turn the adjustment screw with a screwdriver, but first remove the screw plug from it:

What is a carburetor

Carburetor adjustment

A carburetor is a mechanism that is installed on internal combustion engines and feeds it with a mixture of air and gasoline. With its help, optimal mixing of the above components occurs, and you can also adjust the composition before this explosive mixture enters the engine cylinders.

Subsequently, progress did not stand still and instead of carburetors, new devices appeared - injectors, which are installed on all modern cars starting from the 80s.

To begin with, we need to understand what kind of carburetors you can find on your Zhiguli, especially if we are talking about the old Kopeyka - VAZ 2101 and its modifications.

If your car (-2101, -2102) is a rare example of the automobile industry, produced before 1974, then the carburetor on it is 2101-1107010.

If your car was produced from 1974 to the end of 1976, then here you will most likely see a carburetor 2101-1107010-02, and if it was produced between 1977 and 1980. - 2101-1107010-03.

In principle, they are almost the same, for example, the first two models had a float chamber unbalancing valve.

Starter battery correction

At the second stage, you will need to adjust the operation of the starting device. The throttle lever on the secondary chamber is manually turned counterclockwise. It will close. The tip of the thrust lever should fit snugly against the axis of the primary chamber throttle valve.

At the very end there should be a starter rod. Otherwise, you will need to adjust its position. To do this, the rod is bent. This device in carburetor engines is fragile. If you apply too much force to it, the rod will break off.

Kopek carburetor breakdowns

Adjusting the carburetor 4178 on the UAZ

Now it’s worth considering what problems can occur in the carburetor. If suddenly the engine begins to operate unstably in idle mode, changes in crankshaft speed are observed, or the engine stalls if you do not press the accelerator pedal, there is no need to blame the carburetor

. Repair of the VAZ 2105 carburetor: how to adjust the VAZ 2105 carburetor. In particular, this is relevant for those cases when such symptoms began to manifest themselves sharply, there were no prerequisites for this.

the carburetor suddenly fails

, or some of its nodes, or its settings are lost, then the change in operation does not occur abruptly, but smoothly. And also how to adjust the carburetor of a VAZ 2107. How to adjust it correctly. Very often, the cause of floating idle speed is the solenoid valve, which is installed on the VAZ carburetor. If your car has a similar device in its design, then first of all you need to check it.

To do this, disconnect the wire that goes to it, and then apply plus to the valve contact from the battery. If the winding is working properly, a slight click will be heard. After this, the presence of voltage is checked on the wire that is connected to the solenoid valve. If there is no voltage, then there is damage to the wiring from the ignition switch to the solenoid valve.

Also, the symptoms described above may appear in cases where there is very large carbon deposits on the spark plug electrodes. As a result, the spark power is simply not enough to ignite the air-fuel mixture. If there is carbon deposits on the electrodes, then the carburetor itself should be blamed for this. The fact is that it supplies a lot of air-fuel mixture to the combustion chambers. The saddest reason for this is a burnt-out intake valve.

But don’t grab your head right away, first try to set the gasoline level in the VAZ 2101 carburetor. The float position must be adjusted correctly. Often the penny begins to stall and sneeze at high crankshaft speeds. Carburetor

, as a rule, has nothing to do with it. The reason lies in the gasoline supply. The fuel pump diaphragm may already be worn out, but most often the fuel pump rod is worn out. You can read about it in a separate article

Signs of a carburetor malfunction

The VAZ 2101 carburetor is a device that requires periodic cleaning and adjustment, which is determined by operating conditions and the fuel used. If problems arise with the mechanism in question, signs of problems will be reflected in the operation of the power unit: it may twitch, stall, gain speed poorly, etc. As the owner of a car with a carburetor engine, it will be useful to understand the main nuances that can arise with the carburetor. Let's look at the signs of malfunctions and their causes.

Stalls at idle

A fairly common problem on a penny car is a stalling engine at idle. The most likely reasons are:

clogging of jets and XX channels;
failure or incomplete closing of the solenoid valve;
malfunction of the EPHH unit (forced idle economizer);
Damage to the quality screw seal.

The carburetor is designed in such a way that the first chamber is combined with the XX system. Therefore, if the engine operates problematically in idle mode, not only failures can be observed, but also a complete stop of the engine when the vehicle begins to move. The problem can be solved quite simply: faulty parts are replaced or the channels are washed and purged, which will require partial disassembly of the unit.

Video: restoring idle speed using the example of a Solex carburetor

Dips during acceleration

Sometimes when accelerating a car, so-called dips occur. A failure is when, after pressing the gas pedal, the power plant operates at the same speed for several seconds and only then begins to spin up. Dips are different and can lead not only to a later response of the engine to pressing the gas pedal, but also to its complete stop. The cause of this phenomenon may be a clogged main fuel jet. When the engine operates with light loads or at idle, it consumes a small amount of fuel. When you press the accelerator pedal, the engine switches to higher load modes and fuel consumption increases sharply. If the fuel nozzle becomes clogged, the flow area becomes insufficient, which leads to failures in the operation of the power unit. The problem is eliminated by cleaning the nozzle.

Dips, as well as jerks, can be associated with a loose fit of the fuel pump valves or with clogging of the filter elements, i.e., everything that can create resistance when supplying fuel. In addition, air may leak into the power system. If the filter elements can be simply replaced, the carburetor filter (mesh) can be cleaned, then the fuel pump will have to be dealt with more seriously: disassembled, troubleshooting, installing a repair kit, and possibly replacing the unit.

If dips are observed during acceleration, it is necessary to clean the carburetor strainer.

Pouring candles

One of the problems that can happen with a carburetor engine is when the spark plugs flood. In this case, the spark plugs become wet from a large amount of fuel, and a spark becomes impossible. As a result, starting the engine will be problematic. If you unscrew the spark plugs from the spark plug well at this moment, you can make sure that they will be wet. This problem in most cases is associated with the enrichment of the fuel mixture at the time of start-up.

Candles can flood for a number of reasons:

The carburetor starter does not work;
the needle valve has failed;
pumps the fuel pump;
air jets clogged.

Let's look at each of the reasons in a little more detail. In most cases, the problem of flooded spark plugs on the VAZ 2101 and other “classics” occurs during a cold start. First of all, the starting gaps on the carburetor must be correctly set, i.e., the distance between the dampers and the walls of the chamber. In addition, the diaphragm of the starter must be intact and its housing must be sealed. Otherwise, when starting the power unit cold, the carburetor air damper will not be able to open slightly to the desired angle, which is the purpose of the starting device. As a result, the combustible mixture will be forced to be depleted of air supply, and the absence of a small gap will contribute to the formation of a richer mixture, which will lead to the effect of “wet spark plugs”.

As for the needle valve, it may simply be leaking, resulting in excess fuel leaking into the float chamber. This situation will also lead to the formation of a rich mixture at the moment of starting the power unit. If there is a malfunction with the needle valve, the spark plugs can be filled either cold or hot. In this case, it is best to replace the part.

Spark plugs can flood for various reasons, as a result of which starting the engine becomes problematic.

The spark plugs can also flood due to improper adjustment of the fuel pump drive, as a result of which the pump pumps fuel. In this situation, excess gasoline pressure is created on the needle-type valve, which leads to fuel overflow and an increase in its level in the float chamber. As a result, the fuel mixture becomes too rich. In order for the rod to protrude to the required size, it is necessary to install the crankshaft in a position in which the drive will protrude minimally. Then measure d, which should be 0.8–1.3 mm. The desired parameter can be achieved by installing gaskets of different thicknesses (A and B) under the fuel pump.

To prevent the fuel pump from pumping fuel, it is necessary to adjust the rod (drive)

The air jets of the main metering chamber are responsible for supplying air to the fuel mixture: they create the required proportion of gasoline and air, which is necessary for normal engine starting. If the jets are clogged, the air supply is partially or completely stopped. As a result, the fuel mixture becomes over-enriched, which leads to flooding of the spark plugs. The problem is solved by cleaning the jets.

Smell of gasoline in the cabin

Sometimes VAZ 2101 owners are faced with the problem of the presence of the smell of gasoline in the cabin. The situation is not the most pleasant and requires a quick search for the cause and its elimination. After all, fuel vapors are not only harmful to health, but also dangerous in general. One of the reasons for the appearance of the smell may be the gas tank itself, i.e. a microcrack could appear in the container. In this case, you will need to find the leak and seal the hole.

One of the reasons for the smell of gasoline in the cabin is damage to the fuel tank.

In addition to the fuel tank, the fuel line itself can become leaky, especially if we are talking about a “penny” car, because the car is far from new. Fuel hoses and pipes need to be checked. In addition, attention should be paid to the fuel pump: if the membrane is damaged, the mechanism may leak and the smell may penetrate into the cabin. Since the carburetor supplies fuel mechanically, the device must be adjusted over time. If this procedure is carried out incorrectly, the carburetor may overflow fuel, which will lead to a characteristic odor in the cabin.

Operation and repair of VAZ 2101, adjusting the carburetor

carburetor carburetor device VAZ 2109

Mostly older car models are equipped with carburetors. These components usually do not require any special maintenance or constant attention from the car owner, but in order for the combustible mixture to be supplied in the appropriate proportion, the carburetor must be configured correctly. This affects both the service life of the motor itself and the appetite of the unit.

What problems could there be with the carburetor?

Trouble idling

Unstable and incorrect operation of the engine at idle speed may indicate a problem not in the operation of the carburetor, but in the connecting wiring connecting it to the accelerator pedal. To find it more accurately, you need to remove this wire, turn on the engine and move the throttle. If the speed drops to normal, we conclude that the failure is in a faulty wire, otherwise there is a breakdown in the motor unit itself.

The appearance of dirt and dust on the spark plugs

The appearance of soot and aroma on candles can indicate only one thing - excess fuel supply. VAZ 2105, VAZ 2106, VAZ and convergence on the VAZ 2101 it is vertical as shown in. How to set the VAZ 2109 timing belt correctly and breakage. This can happen, in turn, in two cases: either the valve is burnt out, or the fuel level is not set as required (or maybe both). The fuel level may be disrupted due to problems with the float chamber, very high fuel pressure, or a poorly adjusted float itself.

The same prerequisites (pressure, difficulties with the chamber and float) can also lead to gasoline leakage. We check the pressure (the norm is 4-7psi), if this is not the reason, most likely you will have to change the float chamber.

Let's start adjusting the carburetor

So, the main thing in any work is proper preparation. In this case, it consists of checking whether the spark plugs, distributor and wires are in full working order. It is necessary to adjust the carburetor of a VAZ 2101 car, like any other car, on a warm engine. Also, if the unit is dirty or signs of corrosion appear, it must be painstakingly put in order. We replace carburetor cuffs (sold as part of a repair kit corresponding to the carburetor model) and, if necessary, jets.

Next, you need to disconnect the accelerator pedal cable from the throttle valve, disconnect the crankcase ventilation tube, and make sure that there is no vacuum in the advance regulator tube. Now we find the so-called property screws, which help adjust the fuel composition, and screw them alternately clockwise. When the unit starts to work more aggressively and “shakes”, we stop the process, because the upcoming action will end with the motor stopping. On the contrary, unscrew the screw 1 turn back and achieve smooth and stable operation of the unit. This operation must be done one by one with all high-quality screws until we achieve good engine performance.

Perhaps a novice driver will not be able to get by with just these tips and immediately perform all the necessary actions without outside help. But everything comes with practice. But experienced VAZ 2101 owners will be able to fully adjust

carburetor of your own car without the help of others.

What problems in the operation of the VAZ-2105 may indicate the need to adjust its carburetor

The design solution of the carburetor on the VAZ-2105 is aimed at ensuring continuous operation of its engine. However, some circumstances can cause the device to malfunction:

poor quality fuel;
incorrect operation of the components of the mechanism;
natural aging of parts, components and materials from which they are made.

The following malfunctions, which many VAZ-2105 owners may encounter, clearly signal that something is wrong with the carburetor. And it needs adjustment or even repair.

The car, idling, suddenly stalls.
The next time you press the gas pedal, acceleration does not occur immediately, but with a delay. Over time, isolated situations “enter” the system with a gradual increase in the interval between applying the gas and increasing the speed of the car.
Intermittent engine operation, which becomes more noticeable in high gears.
Increased consumption.
It is difficult to start the engine after a long period of parking.

In all situations, experienced mechanics begin by removing the device to flush, clean, and purge jet clearances. Low-quality gasoline and failure of filters often cause clogging of the holes. Through them, the fuel mixture incorrectly enters the system, causing various problems.

The smell of fuel in the cabin or flooding of spark plugs may indicate that the carburetor of your VAZ-2105 is not working correctly and needs not just cleaning and purging, but adjustment. For beginners, it is better to turn to specialists who will competently perform all types of work. Experienced car owners do the adjustments themselves.

Checking and adjusting the float chamber

Before checking and adjusting the carburetor on the VAZ 2107, you must remove the air filter along with the housing. And at the same time, check its condition, since a clogged dust filter greatly restricts air access to the engine, and this can also affect both the proportions of the working mixture and the operation of carburetor peripheral systems. Once the filter and housing are removed, unscrew the carburetor cap and gain access to most of the jets, the float chamber and the primary and secondary chamber diffusers. To begin, unscrew the plug of the filter mesh at the bottom of the lid near the fuel supply fitting. The mesh is carefully cleaned, washed, the internal cavity of the screw plug is washed, and the condition of the aluminum or bronze sealing gasket is checked.

When cleaning the internal cavities of the carburetor, you must follow important rules. Firstly, it is extremely undesirable to clean with fluffy or hard rags, since the fluff can easily clog the channels and jets. Secondly, when mechanically cleaning channels and jets, you should never use metal objects. They can irreversibly disrupt the throughput of the calibrated holes, then it will not be possible to correctly adjust the VAZ 2107 carburetor. The jets are cleaned only with wood chips, and ideally with compressed air or special cleaning liquids. The cone valve and its seat are cleaned using the same method.

Video tips for setting a stable idle

Before adjusting the fuel level in the carburetor, you need to make sure that the float is intact, has no mechanical damage and does not leak gasoline or sink in it. Otherwise, the brass float is replaced. The float is adjusted by changing the angle of the thrust tabs. The factory recommends maintaining the following clearances - with the needle valve closed, the distance from the float body to the carburetor cover gasket should be 6.5 mm. In this case, the maximum free play of the float body should be no more than 8 mm, and the distance to the gasket in the extreme position should be within 14-14.5 mm. These values are achieved by bending the persistent tabs. Check the operation of the float and cone valve by supplying gasoline with the cap installed, followed by monitoring the fuel level in the chamber.

Float system adjustment:

Before you begin this work, you need to make sure that the needle valve is working reliably.

We take a measurement between the float and the gasket. This distance should be 6.5 millimeters. A slight deviation of 0.25 millimeters is allowed. You can also simply use a suitable drill bit to measure.

The clearance is adjusted by changing the angle of the float tongue.

Turn the float all the way. We measure the distance to the gasket in this position. It should be equal to 8 millimeters. Using the tongue we achieve the desired value.

Classification

Carburetor for VAZ 2101

A large number of classic Zhiguli models use the VAZ 2101 carburetor in various modifications. There are several modifications of manufactured 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 VAZ 2101 and 21011 engines, where an ignition distributor without a vacuum corrector is installed. On cars of later production systems are installed that are already equipped with vacuum correctors. It should be remembered that the use of carburetors for VAZ 2101, 21011 and 2105 engines without a vacuum regulator cannot be used on other engines and vice versa. The carburetor of the VAZ 2103 and VAZ 2016 is used in a similar way - only on models where there is no vacuum corrector.

Maintenance at home is a rather complex procedure that requires certain skills, knowledge and tools. You can independently adjust the idle speed, replace gaskets, clean jets, fuel channels, and also visually check the operation of the accelerator pump and, if necessary, replace it. But it is advisable to carry out final adjustments and adjustments in a car service center that has diagnostic equipment for checking the level of carbon monoxide in the exhaust gases.

Purpose of an important node

Many motorists who have no idea how to adjust the carburetor on a VAZ-2103 simply do not understand the principle of operation and design of this device. The function of any carburetor is to mix gasoline and air together. Thanks to this simple device, a special mixture appears in the car at the moment the power unit is activated, transported into the engine cylinders. In fact, how efficiently the vehicle itself operates depends on how well the engine is supplied with gasoline.

Among other components of the device in question, it is worth noting such elements as air and throttle valves, mixing chambers and idle air valve. Of course, these are not all the components of the VAZ-2103 carburetor; in the material below we will consider in detail the operation and principle of setting each individual unit.

The function of the VAZ-2103 carburetor is to mix gasoline and air together

The functionality of any power unit that interacts with a carburetor depends on several important criteria:

starting and warming up the engine;
idle devices;
design responsible for controlling the amount of fuel;
accelerator pump (how quickly the car can accelerate depends on it);
the performance of the elements located in the central dosing chamber;
econostat (located in one of the internal combustion chambers of the engine).

Adjusting the idle speed of the VAZ carburetor

Details
The VAZ-2107 car is equipped with a 2107-1107010 carburetor with an autonomous idle system, which means that when the engine is idling, both throttle valves are completely closed. The emulsion (a mixture of fuel and air) prepared by the carburetor enters the throttle space (under the throttle valve) through the idle channel, bypassing the throttle valve.

It is important that the carburetor adjustment is made after the following have been adjusted:

- gas distribution mechanism (valve), - ignition system, - and only then the carburetor.

The idle speed is adjusted with two screws - quality (3) and quantity (1). These screws are located on the right side of the carburetor (in the direction of travel of the car) in its lower part.

Rice. 1.1 — screw for adjusting the amount of idle mixture; 2 — pipe for supplying vacuum to the vacuum ignition distribution regulator; 3 — screw for adjusting the quality of the idle mixture; 4 — locking screw of the throttle valve of the 1st chamber; 5 — accelerator pump cover; 6 - solenoid valve

We adjust the idle speed as follows (with the engine not running): - screw the quality screw (3) all the way and unscrew it by 4-5 turns, thereby completely enriching the mixture, - quantity screw (1), also screw it all the way and unscrew it to 3 turns, - start the engine (preheated or warmed up to operating temperature), - begin to tighten the quantity screw (1), setting the minimum stable idle speed within 800 rpm, - then gradually tighten the quality screw (3), while tightening screw, the engine speed should first increase slightly, and with further tightening it should begin to decrease and become unstable. At the moment when the revolutions began to become unstable, we unscrew the screw back (0.5-1 turn) until the engine speed is stable. Then, if necessary, use the quantity screw (1) to adjust the speed to the nominal 850+/-50 revolutions. Don’t forget to check how the engine speed changes when the load on the generator increases, with additional equipment turned on (lights, heater...) if necessary, the speed can be increased to 1000, especially in winter.

A little theory

When the engine starts, a vacuum is created in the intake manifold under the carburetor, which is transmitted through the idle channel, bypassing the throttle valve, to the emulsion well. Under the influence of vacuum, fuel is sucked into the emulsion well from the float chamber of the carburetor, which is calibrated by the fuel nozzle of the MDS (Main Dosing System). At the same time, air is sucked in through the air channel from the upper part of the mixing chamber, which in turn is calibrated by the GDS air jet. Getting simultaneously into the emulsion well, in which an emulsion tube is installed for better mixing, the fuel and air are mixed turning into an emulsion. The emulsion flows through the same idle channel into the intake manifold, and then into the engine cylinders. Moreover, it comes in sufficient quantities to ensure uninterrupted operation of the engine in idle mode with the throttle valve closed. In order to relatively accurately calibrate the amount of emulsion entering the intake manifold, an additional idle jet with a holder in model 05 (an electromagnetic valve in model 07) is installed in the idle channel, which is screwed into the carburetor body. After the emulsion has been calibrated with the idle jet, we only need to make finer adjustments using the QUALITY (3) and QUANTITY (1) screws.

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Verifying that the settings are correct

After completing the adjustment, you need to make sure that the carburetor is working optimally. To do this, sharply press the accelerator pedal several times. If the engine picks up speed smoothly and does not stall, then the screws are adjusted correctly. Inexperienced drivers often open the throttle too much, which leads to excessive fuel consumption. Therefore, the quantity screw must be in such a position that the volume of fuel is sufficient for stable operation of the engine at idle.

It is worth noting that the “Weber” carburetors that were previously equipped with “kopecks” are not so easy to adjust. Therefore, with little experience, it is recommended to contact an experienced specialist, since not even all car services are able to properly configure such “rarities”.

Adjusting the carburetor on a VAZ 2101 will not cause difficulties for experienced car owners. For beginners, it is better to do this work with a familiar master, since it is difficult to adjust the screws correctly the first time. By performing such repairs carefully and according to the instructions, you will make the engine run smoothly and reliably.

Preparing the carburetor for adjustment

VAZ 2107 - in the photo - the car is carburetor and is sensitive to fuel quality, therefore sometimes it needs to correct the capacity of channels and gaps

If the engine starts and runs stably at any speed and under any load, fine adjustment is unlikely to be needed. As a rule, this must be done in cases where the engine's fuel consumption exceeds the nominal values, when the engine is difficult to start, and dips appear in transient operating modes during sudden acceleration. Absence or instability of idle speed can also be treated by adjusting or cleaning channels and cavities.

Sometimes there are situations and clear symptoms that it is necessary to adjust the ignition timing or adjust the valves of the VAZ 2107, but the carburetor may be quite serviceable. Therefore, it is worth adjusting it only when there is confidence in the serviceability of the ignition system, the accuracy of setting the thermal clearances of the valves, after checking the functionality of the fuel pump, and good compression in each of the cylinders.

Adjustment may not bring results if the carburetor is clogged or has obvious mechanical problems or leaks. Therefore, a thorough inspection and assessment of the external condition of the device is necessary. Adjustment and configuration begin only when all these conditions are met.

How to set idle speed

First, make sure that the ignition system is set correctly, all wires are in order and the engine is warmed up to operating temperature.

For this:

Turn the “mixture quality” screw (counterclockwise) to maximum speed, this will enrich the mixture with fuel;

Turn the “amount” counterclockwise, while the speed should still increase.

Perform a quality check to see if you can still increase the speed.

The meaning of this operation is to tighten the “quality” screw with the “quantity” screw unscrewed to 850-900 rpm.

You can determine the revolutions by the tachometer on the dashboard, and if you are skilled, by ear.

How to adjust the carburetor on a VAZ-2101

The power unit of any vehicle, like the human heart, could not work without many auxiliary elements. The functionality of the engine directly depends on the quality supply of gasoline to the cylinders. In view of this circumstance, adjusting the VAZ-2101 carburetor becomes simply necessary. However, not every car owner will be able to properly configure the device. A person who wants to independently understand the operation of the engine and carburetor must have knowledge of their power supply system. Of course, even without the necessary experience, a motorist will be able to roughly adjust the device, but for more detailed settings, he will still have to contact more experienced service center specialists.

The functionality of the engine directly depends on the correct adjustment of the VAZ-2101 carburetor

The owner of a domestic vehicle who does not know how to adjust the carburetor on a VAZ-2101 can independently study all the intricacies that relate to setting up such a device. This will especially help those motorists who cannot find competent craftsmen. To begin with, you will only have to study the principle of operation of the carburetor, which will allow you to navigate between the jets located in the fuel supply system. The fact is that these small elements are responsible for the quality of the resulting mixture of air and gasoline.

Adjusting the VAZ-2101 carburetor is a mandatory process that allows the power unit to operate in normal mode. The internal combustion engine directly affects power, resource, efficiency and fuel consumption. In addition, the carburetor should not be readjusted too often.

It is enough just to occasionally clean the channels, flush the carburetor itself and change the jets. The motorist must ensure the timely replacement of fuel and air filters

In addition to the fact that parts need to be replaced, it is important to select high-quality components. When purchasing such parts on the market, it is important to monitor their condition in order to protect yourself in advance from malfunctions that may subsequently arise in the fuel injection system

It is necessary to ensure timely replacement of fuel and air filters

Introduction

Owners of domestic vehicles, such as, for example, the VAZ-2103, quite often try to fix the car with their own hands. Despite the fact that modern service stations are located on almost every corner and by turning to qualified specialists one could avoid wasting one’s own time, many are in no hurry to solve their problems in this way. Some self-taught craftsmen independently carry out such complex operations, which include adjusting the VAZ-2103 carburetor. Of course, in order to do something like this with your own hands, you need not only free time and patience, but also important and useful knowledge regarding the design features of the device in question.

To adjust the VAZ-2103 carburetor, free time, patience and knowledge are required

In the material below, we will consider the principle of the design of the carburetor of the domestic VAZ-2103, its configuration and adjustment.

Repair instructions

As a rule, carburetor adjustment is required after 7500–8000 km. If the car is not used much, then this work should be carried out at least once a year. Before tuning, thoroughly clean the spark plugs, distributor and check the wiring.

Tip: During repairs, new cuffs and jets may be needed; these parts should be purchased in advance.

List of tools and preparatory work

Adjustment does not require much physical strength, the main thing is to do everything accurately and accurately. Preparing 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.

After unscrewing the 4 nuts, remove the top cover of the carburetor and clean the chambers

The internal chambers must be thoroughly cleaned of dust and soot residues. replacing the timing belt on a VAZ 2109. Detailed instructions for bleeding the brakes on a VAZ 2101 yourself + video. In this article you will learn how to properly bleed the brake system of a VAZ. How to properly tighten the timing belt on a VAZ 2108. We clean small holes with air using a spray can or a regular pump. Warm up the engine and set it to the handbrake.

Signs that your carburetor needs adjustment

The carburetor design on the VAZ-2101 is quite simple. It may vary slightly depending on the car model. It’s easy to understand that it’s time to configure this node. The main features are the following facts:

The engine stalls at idle speed.
The spark plugs are flooded or carbon deposits have formed, which prevents the engine from starting easily.
Increased fuel consumption or fuel leakage (see fuel consumption table for carbureted vehicles).

In this case, a thorough check of the entire system will be required. In some cases, the malfunctions listed above are associated with other failures in components and mechanisms.

It is recommended to adjust the carburetor before the first signs of malfunction appear. The design of this unit requires adjustment every 8 thousand kilometers. This procedure must be carried out at least once a year, even if the car is rarely used.

Before starting work, if necessary, you need to repair the wiring, distributor and clean the spark plugs. There is a simple technology on how to properly adjust the carburetor on a VAZ 2101.

How to adjust the carburetor on a VAZ 2101

What is needed for adjustment

First you need to prepare the appropriate repair kit for the VAZ 2101 carburetor. You will also need new cuffs, carburetor jets and other spare parts. To adjust the carburetor, you will need a repair kit, which includes the following tools:

Spanners.
Rags.
Screwdrivers (phillips, flat).
Protective gloves.
Solvent.
Toothpicks.
Compressed air can or pump.

After appropriate preparation of the repair kit, you can begin adjusting the VAZ-2101 carburetor. This does not require much effort. All actions must be careful and precise.

You also need to inspect the components on which the operation of the motor may depend. You need to inspect the spark plugs. By their appearance you can tell in what proportions the fuel is mixed with air.

The carburetor needs to be cleaned. To do this, dismantle its top cover. The float and vacuum valve are removed. The interior of the chambers needs to be cleaned. Soot and dirt accumulate here. Cleaning is carried out using an air can or a pump.

Another mandatory action is to check the gap between the distributor electrodes, as well as the high-voltage coil and wires. The adjustment is carried out only after the engine has warmed up to 90ºС. Cars are put on handbrake.

Throttle valve adjustment

Starter battery correction

Checking the pump accelerator and repairing it

You need to start checking by testing the functionality of the system. You need to collect in a beaker the fuel that will be generated during 10 cycles of operation of the throttle lever. From 5.2 to 8.7 cm³ of fuel should accumulate. If this is not the case, you need to clean the VAZ 2101 carburetor jets. To do this, bleed the pump. This will help clear clogged injectors. This procedure is performed about 10 times. Then the fuel is measured again.

If the purging procedure does not give the desired result, the accelerator will need to be completely replaced.

If the engine malfunctions at high speeds, you need to check the pump diaphragm. It could wear out. The fuel pump rod often wears out.

Idle speed adjustment

Adjusting the fuel system involves adjusting the idle speed at the final stage. You will need to warm up the engine for 15 minutes. Then the engine must be turned off. The quantity and quality screws are tightened until they stop. The first of them needs to be released 3 turns. The quality screw is unscrewed 5 turns.

The motor starts. The quantity screw sets the speed, which is about 800 per minute. Then the quality screw is slowly tightened. This way you can reduce the enrichment of the fuel mixture. This procedure is carried out until the speed begins to drop. After this, the quality screw must be unscrewed another half turn and fixed in this position.

Knowing how the carburetor adjustment procedure is carried out, you can do the job well yourself. The engine will operate stably, and the VAZ 2101 will operate in normal mode.

How to set up a carburetor

Before you start adjusting the penny carburetor, you need to make sure that all components that affect the normal functioning of the internal combustion engine are in good condition. Check the spark plugs, the gap between the electrodes, the distributor, the coil, and the high-voltage wires. You can adjust the carburetor on a VAZ 2101 car only at engine operating temperature (85..90 degrees).

But before you start making adjustments, be sure to purchase a repair kit for the VAZ 2101. Moreover, pay attention to the fact that this repair kit matches your carburetor. If Solex is installed, then you do not need to buy a repair kit for DAAZ. Of course, the price of this set is not very high, but if you buy the wrong one, you will have to run around a little, exchanging for the right one. Disconnect the cable that connects the accelerator pedal to the throttle valve drive. The pipe connecting the air filter housing to the breather must also be disconnected.

Make sure that there is no vacuum in the hose connecting the carburetor to the advance angle adjuster on the distributor. Now you need to adjust the quality of the mixture. Screw in the screws one at a time until the engine begins to shake slightly. Now we need to achieve normal and most stable operation. To do this, unscrew the quality screws one by one. Do not make more than one turn. This adjustment is purely by ear, but it is quite possible to normally adjust the carburetor of a penny in this way.

To determine how well the adjustment has been made, open the throttle sharply and then close it immediately. If the speed increases sharply, there are no delays, then the carburetor is adjusted correctly. But the further operation of the VAZ 2101 will show more accurately. Carefully monitor how much gasoline is consumed per hundred kilometers. From time to time, check the condition of the spark plugs; if there is carbon deposits on them, adjust the air supply to the carburetor of the VAZ 2101.