The VAZ 2107 catches and stalls. Why does the VAZ injector start and stall right away? Clogged fuel and air jets

Hello everyone today I want to talk about the reasons why your VAZ 2107 car stalls, and due to this unpleasant annoyance, you can no longer continue driving on your iron horse. Today we will try to consider the main reasons why your engine stalls. Of course, unfortunately, there are a lot of such reasons.
The first reason is problems with the idle speed regulator (IAC), usually the car stalls at idle. Pxx can fail due to contamination, and this leads to the fact that the stem wedges. To make sure you need to remove the IAC from the seven and rinse thoroughly in case of contamination. It is advisable to use a liquid that washes away the oil well.

The second reason due to which the VAZ 2107 stalls is the alarm (if, of course, it is installed), in most cases the alarm works with the electric circuit of the gasoline pump, but where does this ask you? And besides, the unscrupulous mechanic who connected the alarm to you could do his job poorly from here and problems may follow. Moreover, if they did everything on twists, then over time it weakens, and everyone write letters, as they say. Power to the pump ceases to flow, as a result of which the VAZ 2107 will not start.

The third reason is that the fuel mixture is too rich. You can check this version by unscrewing the candles, if the contacts of the candles are covered with black carbon, this means that the mixture is too rich. For how much gasoline is supplied to the cylinders, the position of the throttle valve, as well as the readings of the temperature sensor, is responsible; on a VAZ 2107 car, this sensor is located on the left in the back of the block head. If it becomes necessary to replace the temperature sensor, then you will have to drain some, then part of the antifreeze.
Failure of the mass air flow sensor (DMRV) on the VAZ 2107 also leads to an enrichment of the mixture. You can check the operation of the DMRV using a multimeter. If the voltage is more than 1.002 volts, then it will have to be replaced.

The fourth reason is the strong depletion of the combustible mixture. As a result, your "Seven" will also stall. This is mainly due to air leaks. The main places of suction are the gaskets of the intake system, or loosening of the fastening in the places where they stand. To find air leaks, a smoke generator is usually used to see where the smoke is being drawn in.

And the fifth reason is the vacuum brake booster. Since air leaks can also pass through it. This happens due to a leaky diaphragm. You can determine a faulty vacuum tank on a VAZ 2107 by pinching the hose that connects the vacuum amplifier and the intake manifold, if the engine does not stall, then most likely you will have to change the vacuum tank.

Well, that's all we have considered the main reasons why the VAZ-2107 car stalls, if you had other reasons, then write in the comments. Goodbye to everyone.

In this article, we will dwell in more detail on the situation when the carburetor engine of a car (VAZ 2108, 2109, 21099, 2105, 2107 and their modifications) starts and stalls due to a carburetor malfunction. Malfunctions of carburetors 2105, 2107 Ozone, 2108, 21081, 21083 Solexi of their modifications will be considered.

Malfunction symptoms

— The engine starts up, runs for a few seconds and stalls, repeated starts are ineffective.

- The engine starts up with difficulty, after running for a short time it stalls, after restarting it starts and runs.

- The engine starts up and immediately stalls, starts up again and stalls again and so on several times, but then it still starts to work.

Causes of malfunction

There is no fuel in the float chamber

Pump it up with the manual priming lever on the fuel pump.

The diaphragm of the starting device is damaged or it is not adjusted

Disassemble the body of the starting device, replace the diaphragm with a new one. Adjust the starting device.

starting devices for carburetors 2108, 21081.21083 Solex, 2105, 2107 Ozone

Clogged fuel and air jets, emulsion wells and main metering system pipes

It is necessary to remove the carburetor cover, unscrew the jets, remove the tubes, rinse and clean them, clean the wells, blow everything with compressed air and put it back. The image shows that it is worth cleaning the carburetor 2105, 2107 Ozone.

Unscrew the air jets on the Solex carburetor, take them out together with the emulsion tubes. There are fuel jets at the bottom of the opened wells. We turn them out with a thin long slotted screwdriver. We clean, rinse with acetone and blow with compressed air.

fuel and air jets, emulsion tubes and emulsion wells GDS carburetors 2108, 21081, 21083 Solex, 2105, 2107 Ozone

Clogged fuel and air jets and channels of the idle system

Unscrew the nozzles, rinse and clean them, blow with compressed air.

air and fuel jets of CXX carburetors 2108 Solex and 2105, 2107 Ozone

The fuel level in the carburetor float chamber is broken

The fuel mixture is either very lean or very rich due to improper adjustment.

approximate fuel level in the float chambers of carburetors 2108, 21081, 21083 Solex, 2105, 2107 Ozone

Articles on the site about fuel level adjustment:

The carburetor air damper drive is not adjusted ("suction")

Owners of VAZ 2107, 2110, 2112, 2114, and other cars, may face a problem - the car starts up and immediately stalls. The engine starts, but after a few seconds the rpm drops and the engine stalls. Consider the possible causes of a startup malfunction, and how to fix them.

First, let's look at the most common problems.

Out of gasoline (diesel)... As paradoxical as it may sound, drivers often forget to monitor the fuel level in the tank.
On diesel engines(especially in winter) the reason that the car started up and stalled almost immediately could be frozen fuel (but as a rule, diesel VAZs are a rarity).
Gasoline quality at gas stations, it is often terrifying, so if you fill a car with low-quality fuel, you can face the problem of a stalling engine. If there is a little bad gasoline, you can dilute it with good gas. But if the tank is full, then it is better to drain the surrogate out of harm's way.
Worn wires and old (faulty) spark plugs are also very often the cause.
Compression engine, or rather its absence, can provoke a situation in which the engine stalls barely having time to "pick up". But this is already a very serious breakdown, the appearance of which is accompanied by a host of other symptoms, which are simply impossible not to notice during the operation of the car.

An interesting article about biofuels made from ordinary sawdust, in more detail .

VAZ with an injector start up and suddenly stalls

A few reasons:

Injection vehicles may behave this way due to a malfunctioning fuel pump.... It is in the tank. It is very simple to check its performance. If you turn the ignition key to the first position and listen, you will hear how the pump works, pumping gasoline into the system.
Heavy contamination of the fuel filter fine cleaning can also cause the car to stall after starting. The filter simply does not have time to pass the required amount of gasoline.
ECU errors often lead to problems with starting the engine, not receiving signals from certain sensors, or receiving them in a distorted form. Diagnostics of such breakdowns is best done in specialized services.

The reasons why carburetor cars start and stall

If the car starts up and immediately stalls, then the problem may be due to the lack of fuel in the float chamber.... You can try to manually pump up the fuel pump. It must be checked for operability, and, if necessary, replaced. Before you engage in self-cleaning of the power system in general and the carburetor in particular, it should be remembered that any unconscious manipulations can lead to a large increase in fuel consumption.
Another reason why the engine stalls is that the mesh filter in the carburetor is clogged in front of its entrance.... If the car starts up and stalls after a few seconds because of this filter, then it must be cleaned and rinsed. To do this, use a toothbrush and thinner (gasoline or acetone). After that, immediately, together with the filter, clean the slot into which it is inserted.
It happens that in VAZ cars, a few seconds after starting, the speed drops due to a malfunction of the solenoid valve... The check is carried out as follows: the valve is unscrewed, power is supplied to the positive contact, and the body is closed to the motor ground. If the valve is working properly, a distinct sound will be heard, and the needle will enter the body.

You can simply wire connected to the valve and put it in place. If you do not hear a click, the valve is faulty. We unscrew the valve and take out the jet from it. If it is bent, it needs to be replaced. Make sure the valve stop needle moves freely and that the valve gasket is not torn and that it fits snugly against the body.

If there is a click of the valve, then it is necessary to diagnose the EPHC system. The idle fuel jet may need to be cleaned. If a car's engine speed drops, clogging can affect stability. To clean the jet, it is necessary to create an increased vacuum in the channels of the system.

To do this, we start the car and raise the rpm to 3000. Turn the jet holder (solenoid valve) by a few turns. This allows you to create the required vacuum in the channels. We repeat the procedure several times.

What else can there be breakdowns of the VAZ 2107

Another common problem due to which the engine of VAZ 2107 cars starts and stalls is excess air entering the carburetor... In this case, the fuel mixture cannot keep the engine running for a long time, and although the car starts up, it stalls after a few seconds. It is necessary to determine the place of air leakage and eliminate the gap.

It happens that the nozzles and nozzles of the dosing system are clogged... This also affects the drop in engine speed, so that the VAZ 2107 stalls after a few seconds. What to do in this case? It is necessary to unscrew the jets and pipes under the carburetor cover and clean them. After that, blow out the wells and jets with compressed air. If you have a Solex carburetor, then you also need to clean and blow the fuel jets located at the bottom of the wells.

Solex carburetor problems

In addition to all of the above, engine speed drops if the fuel level in the carburetor (float chamber) is incorrectly adjusted. As a result, there is either insufficient or too much gasoline in the fuel mixture. When adjusting the VAZ 2107 carburetor, it does not need to be disconnected from the engine.

Follow these steps:

remove the air filter housing by unscrewing all fasteners;
remove the carburetor cover;
check the position of the floats. To do this, breed and bring them together to achieve the correct location.

It is necessary to achieve such a position of the floats so that they move freely without clinging to the walls of the chamber in which they are located. It will not be superfluous to measure the distance from the protrusions on the floats to the paper pad. The distance should be within 0.75–1.25 mm. Use a dipstick to measure.

What if it is far from the norm? In this case, you need to adjust the height of each of the floats.

As we have seen, there are not so few reasons why the engine stalls. To start the engine correctly, you need to check and eliminate all of the above malfunctions. After that, if the problem has not been resolved, you will have to contact the specialists.

Here we will analyze in detail all the possible reasons why the carburetor stalls in a VAZ 2107 car. In most cases, the breakdown can be fixed on your own, but sometimes a complete replacement of the carburetor is required.

If you notice some of these phenomena in the operation of a VAZ 2107 car, then you should carefully check the carburetor. Perhaps you will find a breakdown in it.

If the VAZ 2107 starts up and immediately stalls, the carburetor may be the cause. All subsequent attempts to start the engine will be ineffective.
In cases where the engine is difficult to start, the carburetor should also be checked. The car may stall after a short period of time.
If the engine stalls immediately after starting, this is also a sign of a malfunctioning carburetor. The engine will stall several times, and only after numerous attempts, you will be able to start the VAZ 2017.

The reasons for the breakdown of the carburetor VAZ 2107

Here we will describe in stages all the possible reasons that the VAZ 2107 starts and stalls.

If the reason for the breakdown of the carburetor was the lack of fuel in the float chamber, then there is a high probability that the gas pump or the power system is also faulty. Just remove the hose from the fuel inlet fitting. After that, make a couple of clicks on the lever for manual fuel supply. Gasoline should flow out of the hose hole. If the jet was weak, or was absent altogether, then a detailed check of the fuel pump and power system should be carried out.

A clogged filter is also a common cause of carburetor breakdown. It will be very easy to fix this cause. You will need to remove the strainer and then clean it. For cleaning purposes, use a toothbrush, or something similar to it.

You can try rinsing the filter with acetone. A can of compressed air can also help. Blow the entire filter with it. Clean the filter seat. Sometimes it may be necessary to completely replace this part, but it is better to try to simply clean it.

Breakage of the solenoid valve or fuel jet of the idle system

First of all, you need to look at the position of the fuel jet and solenoid valve. As a result of some breakdowns, it may turn away, which is why a breakdown occurs. Just trust him. Also try removing the wire from the valve and putting it back on. You should hear a distinctive click. It indicates that the valve is working. If you do not hear a click, then connect the plus of the accumulator and the terminal of the valve. If you do not hear a click, then you will need to replace the valve. If there is a click, it is worth checking the EPHC system.

The serviceability of the valve can be checked by removing the fuel jet from it. Examine it carefully. It should be free of contaminated areas and damage. Look at the o-ring and lock needle. The jet should be thoroughly cleaned and blown out with compressed air.

This is a very widespread problem that will be difficult to fix. Because of it, the car does not always stall. This can happen if the fuel mixture is very much depleted of excess air. This is the reason why the carburetor starts and stalls in the VAZ 2107. In this case, you need to check the entire carburetor.

Particularly susceptible to:

Ring under the valve;
Tube to vacuum cleaner;
Tube to valve cover;
Quality screw ring.

Sometimes it will be easier to replace the entire carburetor.

Diaphragm of the starting device is damaged

If the reason lies in the diaphragm of the trigger device, then it will have to be completely disassembled and inspected. Sometimes it may be necessary to completely replace the starter, but not often. It will need to be adjusted. Be sure to replace the diaphragm with a new one.

Clogged fuel and air jets

The emulsion wells and piping of the dosing system can also be clogged.

You will need to disassemble the carburetor, remove the above parts and clean them. For cleaning, use acetone, a brush and a can of compressed air. They must be cleaned of all visible contamination. It is worth noting that in the Solex and ozone systems, the components will be the same. Only their location differs.

Cleansing requires:

Air jets;
Emulsion tubes;
Fuel jets;
Emulsion wells.

All components must be cleaned, even if some of them are not heavily contaminated. This will help avoid re-breakage.

Clogged fuel and air jets of the idle system

Clogging of these sections of the carburetor can also cause the VAZ 2107 to start and immediately stall. In this case, you will have to disassemble them. This is easy enough to do, you just need to carefully unscrew the jets. Next, you need to clean them and blow them with compressed air. Sometimes they may need to be replaced. You can try cleaning the jets without having to completely disassemble the carburetor. This will significantly reduce the cleaning time.

The fuel level in the float chamber is violated

This is a very common reason why the carburetor stalls in the VAZ 2107. This is due to improper adjustment of the fuel level. The fact is that the fuel mixture is disturbed. It can be highly enriched, or vice versa depleted. In this case, adjustments need to be made. It may take a long time, but this will avoid carburetor malfunctions.

Suction not adjusted

Due to the fact that the choke may not be fully open, the fuel can be enriched. Most often this does not lead to serious problems, but sometimes the fuel is enriched so much that the engine is very difficult to start. Especially if it has been heated up by a long ride. In this case, it is worth adjusting the air damper (suction). Sometimes a highly enriched mixture can even flood candles.

With proper operation of the air damper, it should overlap the section of the right chamber. This happens when the handle is fully extended. And if the handle is recessed, then it should stand up vertically. If this does not happen, then the reason for the breakdown of the carburetor lies precisely in the incorrect adjustment of the choke. It shouldn't take you long to adjust it.

Other reasons why the VAZ 2107 stalls

VAZ 2107 can stall not only because of the carburetor. This may be due to the breakdown of other systems. First of all, pay attention to the ignition system. Its breakdown can often be confused with a breakdown of the carburetor. This is because the symptoms of a malfunctioning ignition system are very similar to those of a carburetor malfunction. You also need to check the power system. It can also be the reason that the VAZ 2107 starts up and immediately stalls.

conclusions

Most of the above causes of breakdowns can be eliminated by yourself. To do this, you just need to clearly follow the instructions. Most often, you just need to clean some parts of the carburetor, but sometimes it may be necessary to completely replace the carburetor in a VAZ 2107 car. So you will quickly get rid of many problems associated with the fact that your car starts up and immediately stalls.

First you need to go through the most obvious options.

Out of gasoline (diesel). As paradoxical as it may sound, drivers often forget to monitor the fuel level in the tank.
On diesel engines (especially in winter), frozen fuel can cause the car to start and almost immediately stall.
The quality of gasoline at filling stations is often appalling, so if you fill a car with low-quality fuel, you can face the problem of a stalling engine. If there is a little bad gasoline, you can dilute it with good gas. But if the tank is full, then it is better to drain the surrogate out of harm's way.
Worn wires and old (faulty) spark plugs are also very common causes.
Compression of the engine, or rather its absence, can provoke a situation in which the engine stalls barely having time to "pick up". But this is already a very serious breakdown, the appearance of which is accompanied by a host of other symptoms, which are simply impossible not to notice during the operation of the car.

The injector starts and stalls

Injection vehicles can behave this way due to a malfunctioning fuel pump. It is in the tank. It is very easy to check its performance. If you turn the ignition key to the first position and listen, you will hear how the pump works, pumping gasoline into the system.

Severe contamination of the fine fuel filter can also lead to the car stalling after starting. The filter simply does not have time to pass the required amount of gasoline.

ECU errors quite often lead to problems with starting the engine, not receiving signals from certain sensors, or receiving them in a distorted form. Diagnostics of such breakdowns is best done in specialized services.

Why carburetor cars start and stall

If the car starts up and immediately stalls, then the problem may be due to the lack of fuel in the float chamber. You can try to manually pump up the fuel pump. It must be checked for operability, and, if necessary, replaced.

Before you engage in self-cleaning of the power system in general and the carburetor in particular, it should be remembered that any unconscious manipulations can lead to a large increase in fuel consumption.

Another reason why the engine stalls is that the mesh filter in the carburetor in front of it is clogged. If the car starts up and stalls after a few seconds because of this filter, then it must be cleaned and rinsed. To do this, use a toothbrush and thinner (gasoline or acetone). After that, immediately, together with the filter, clean the slot into which it is inserted.

It happens that in VAZ cars, a few seconds after starting, the speed drops due to a malfunction of the solenoid valve. The check is carried out as follows: the valve is unscrewed, power is supplied to the positive contact, and the body is closed to the motor ground. If the valve is working properly, a distinct sound will be heard, and the needle will enter the body.

Other reasons for the incorrect start of the VAZ 2107 engine

Another common problem, due to which the engine of VAZ 2107 cars starts and stalls, is excess air entering the carburetor. In this case, the fuel mixture cannot keep the engine running for a long time, and although the car starts up, it stalls after a few seconds. It is necessary to determine the place of air leakage and eliminate the gap.

It happens that the nozzles and nozzles of the dosing system are clogged. This also affects the drop in engine speed, so that the VAZ 2107 stalls after a few seconds. What to do in this case? It is necessary to unscrew the jets and pipes under the carburetor cover and clean them. After that, blow out the wells and jets with compressed air. If you have a Solex carburetor, then you also need to clean and blow the fuel jets located at the bottom of the wells.

Adjusting the fuel level in the float chamber (Solex carburetors)

In addition to all of the above, engine speed drops if the fuel level in the carburetor is incorrectly adjusted (float chamber). As a result, there is either insufficient or too much gasoline in the fuel mixture.

When adjusting the VAZ 2107 carburetor, it does not need to be disconnected from the engine. Follow these steps:

remove the air filter housing by unscrewing all fasteners;
remove the carburetor cover;
check the position of the floats. To do this, breed and bring them together to achieve the correct location.

What if it is far from the norm? In this case, you need to adjust the height of each of the floats.
As we have seen, there are not so few reasons why the engine stalls. To start the engine correctly, you need to check and eliminate all of the above malfunctions. After that, if the problem has not been resolved, you will have to contact the specialists.