The engine VAZ-2114 is injected with an injector (8 valves). Engine repair

In the period of the automotive industry becoming one of the most popular were 4-cylinder engines. And today they are the most common. It happens that due to a number of reasons, one of the cylinders "turns off", and the unit operates on the remaining three. It happens that the engine VAZ-2114 injector injects (8 valves). What are the causes of this phenomenon and what to do about it? Let's try to understand.

Engine characteristics

For cars of this model, an 8-valve engine with an index of 2111 was developed. If you compare this unit to others, then there are serious differences. This is electronic control and distributed fuel injection. ECU fully takes into account all the basic data that are required for effective operation. The motor is quite hardy, powerful, economical.

Capacity is 78 horses. The volume is 1.5 liters.

Each of the four cylinders has two valves. They have a diameter of 81 mm. Features of the construction of this unit allow to increase power characteristics up to 120 liters. from. There is also a modified unit with a volume of 1.6 liters and a capacity of 80 liters. from.

The owners are very satisfied with these engines. They fully justify themselves. However, it happens that the engine is on the move, and other malfunctions are also observed. In most cases, all this can easily be repaired.

How to understand what the motor affected?

To mix this with something is very difficult. Even inexperienced motorists can clearly hear this sound. The smooth operation of the engine turns into intermittent terrible sounds. It is difficult to describe it, but from the muffler instead of the usual hissing will "bomb."

Effects

If the engine VAZ-2114 is hit by an injector (8 valves), then the internal combustion engine immediately loses power. After all, on three cylinders, everything is different. Another typical feature for the VAZ line is vibration, as well as a shiver from the engine compartment. Another symptom of the "disease" - increased fuel consumption and a distinct, saturated smell of gasoline from the exhaust pipe and in gases. And that's not it. It is important to respond in time to the signals that appear, otherwise the car will require serious repairs.

When one cylinder does not function, the fuel mixture in it does not burn, but simply accumulates.

Then it is diluted with oil and sent to the crankcase. The more fuel there gets, the more liquid will be the oil. It will quickly lose its lubricating properties. As a result, there is an increased wear of the cylinder-piston group, rings and other parts. After a while, the engine will require major repairs (VAZ-2114 - the model in question).

Causes

There are a lot of them. There are even such nuances, where real professionals can not immediately identify the problem. However, we give statistics of the most frequent causes.

Trouble can arise due to a non-working candle. This phenomenon is also observed with a broken high-voltage wire, failure of the ignition coil, faulty ECU. Another possible reason is the suction of air in the intake manifold, exhaust valve bleed. With a punctured cylinder head gasket, this problem also appears. Still this effect is caused by broken compression rings, piston burnout. Naturally, this is not all the reasons why the VAZ-2114 engine is injected (8 valves).

Put the diagnosis yourself

Now that you know the reasons, let's look at how the diagnostics are done. You need to start from the simplest. Let it be a non-working cylinder.

So, the first thing to do is start the engine and open the hood. Then listen to how the engine works and remember this sound. Now alternately take out the high-voltage wires. Candles will not receive voltage, and the cylinders will stop working. Listen carefully. Has the sound changed? If not, your problem is the cylinder that is not working.

Checking the candles

It is important to find out if the spark enters the cylinders. To do this, you will need a candle key. Unscrew the spark plug from the inoperative cylinder, inspect its electrode. If you saw a build-up or smoke, then such an element should be replaced. You can clean the candle, but it's not forever, but only for a while will solve the problem.

Now let's test the spark for a spark. Connect a high-voltage wire to it and put it with a metal part to the motor housing. In doing so, place it so that the electrode does not touch the housing. Then invite an assistant. Its task is to rotate the starter, and yours is to watch the candle. If there are sparks when the starter is running, you may have problems with the wires. This is also related to the non-operating coil, computer or crankshaft position sensor. Probably there is a timing belt shift, which can be the reason for the trip on the run.

Trojet in damp weather

Yes, and this is not a joke. Many owners who have cars VAZ families note that recently washed or just on a damp day, the "iron horses" start to be trodden.

Among the common causes - a liquid that hit the candle wells.

As a result, the spark plug stops sparking, which means that the cylinder can not work properly. But this is not all.

So, various sensors could fail due to the influence of an aggressive environment. Also, when cleaning with high-pressure devices, various vulnerable parts could be damaged.

As for the environmental conditions, in damp weather the engine is thrown after a long idle time. The engine does not start immediately, but from the fifth to the sixth time. The motor is uneven and unstable until fully warmed up. Visual inspection often results in no results. The motor becomes normal after a certain period of time until it is completely cooled down or until the next rain. The reason here is partly the same as after the car wash.

Dampness, or rather, condensation accumulates under the body of the trambler. There is an easy way to diagnose this problem. Start the engine in the dark. If you see lights under your hood, you need to replace the wires.

Do not forget about the candles. If the engine does not want to start up in damp, then, most likely, candles ask for a replacement. Perhaps they stopped giving a strong spark. In a wet, rainy day, moisture can accumulate on the candles, which leads to current leakage. Even often, the ignition coils are to blame. Their bodies are cracking, and condensation is accumulating in them.

Cold engine is unstable

Sometimes brands VAZ cars are shaking, while cold. But it's worth it to warm up, as they begin to work more stably. Here you can also identify a few simple reasons. Most often, the ECU issues commands to create a too rich fuel mixture. If high-voltage wires are damp, this also leads to a similar effect. Worn parts of the piston group will cause a trip.

Trojit when it is warm

It also happens in another way. While cold, you can observe a stable operation, but it is worth heating, as soon as the engine VAZ-2114 injector (8 valves) is thrown. Often this is due to a burnt cylinder head gasket , faulty ECU or problems in the ignition coil.

Problems at idle

This is a particularly common situation. And there is absolutely no difference, a cold engine or warm. In this case, there are very, very many reasons. This may be something elementary - from the rejection of one of the candles to serious problems in the piston group. If the part changes easily, the worn out cylinders assume a serious repair. VAZ-2114 is not an exception.

Thus, the unstable operation of power units at idle speed may be due to the clamped valves, the mismatch of the timing belt marks, the burnout of the valves in the motor. They can also be damaged due to a hydraulic shock. Do not exclude various malfunctions in electronics.

If it hurts, then stalls

Many motorists have faced this problem more than once. The search for possible causes and malfunctions begins. The ECU is tested, everything is checked, and the result is zero. It still tends the engine and stalls.

In this case, you can check the condition of the injectors. For many, after a serious diagnosis, this problem is very easy, simple and inexpensive solved by cleaning the injectors and the fuel rail.

If the reason is hard to find

Happens and such. And this is quite a frequent situation. Diagnosis of a car through computer systems can help. Such an operation will test all the sensors, the electronic engine control unit, and as a result will give out information on where exactly the VAZ-2114 car has a malfunction.

If you are faced with this breakdown, do not panic. Everything can be repaired, and this effect is not fatal. If you can not determine the cause yourself, contact an experienced person. But often everything can be found and eliminated with their own hands.

conclusions

It is important to carefully monitor the condition of the car and its individual components. With good care, timely replacement of consumables and liquids, this machine will work no worse than Swiss watches. Well, if suddenly the unit finally fails, you can always buy and install a new one - the price of an engine with a volume of 1.6 liters is about 20 thousand rubles.

So, we found out the main reasons why one of the cylinders in a VAZ-2114 car might not work.