Lada Priora engine troubles 8 and 16 valves: causes, repair

It is useful for any fan of the domestic automobile industry to know the reasons why the Priora engine has 16 valves. After all, this problem is quite common. Ask any driver what the reason is, he will immediately give several options for the malfunction. And also ways to solve them. Of course, by interviewing many people you can find out all the reasons. But they still need to be checked. In addition, very often the cause of engine tripping can be several conditions at once. To ensure that the problem is resolved, you need to check all possible options. Only in this case will you get rid of this problem.

Causes and Effects

The reasons why the Priora 16 valve engine is tripping can be very diverse. Several systems are involved in the normal operation of the engine. Therefore, to identify the source of the problem, it is necessary to check the following systems:

Supply system;
Ignition;
Sensors

Very often, it is on Priors with a 16-valve engine that the problem arises due to power problems. Therefore, you need to check it first.

The consequences of engine tripping can be the most unpleasant. Outwardly, this manifests itself as hassle. After all, the engine is unstable and shaking. Often the interior begins to smell of gasoline. Don't forget the money issue. The car noticeably increases its appetite and you have to visit the gas station much more often. It's much worse that it leads to more serious damage.

First, the fuel settles on the cylinder walls and seeps into the block, mixing with the oil there. Due to this, the lubrication of the unit deteriorates, and parts wear out faster. It is also possible for a water hammer to form if a sufficient amount of fuel accumulates in the cylinder. In the simplest case, the remaining working cylinders bear a large load. As a result, their elements fail earlier. In any case, it is necessary to eliminate this problem in a timely manner.

Before you begin more specific troubleshooting, perform diagnostics using a laptop. This will help you determine which cylinder is not firing. Typically, such errors are recorded in the memory of the engine control unit. Having determined where the flash skip occurs, start working.

Consequences of error P0300

If a misfire occurs in the engine in the exhaust pipe the level of exhaust gas toxicity increases , which, in turn, can also lead to an increase in the temperature in the catalyst, which causes its damage (the honeycombs melt because the temperature exceeds the threshold of 800 °C ). On some cars, in order to reduce the burnout of fuel in the catalytic converter and, consequently, the level of toxicity, the ECM unit monitors the frequency of misfires using crankshaft and camshaft sensors and, in addition, it registers error p0300, signaling a checkengine light can also , in which the gap was discovered. It is worth mentioning that most often, for some reason, the owners of cars such as Lacetti, Matiz, Priora and other injection VAZs, as well as Opel, Nissan, Kia cars, are interested in the reasons for the occurrence of this error.

Nutrition

A missed flash may occur due to the fact that there is simply nothing there to burn, that is, to flash. So first, start the engine. When it has been running for a couple of minutes, turn it off and remove the spark plug. If it turns out to be dry, then the reason is the lack of fuel. There may be several reasons for this situation:

The most common cause of 16 valves on a Priora is damage to the injector winding. You can check this by removing the cover and manifold. Then measure the resistance on the injector winding; it should be within 15-15 Ohms. If it is faulty, it should be replaced. Read more about how to do this in the article “How to check an injector nozzle”;
Another reason is a clogged injector. This usually happens when using low-quality fuel. You can also “clog” these engine elements yourself by pouring various cleaners into the tank. They partially destroy sediments. Which, in the form of a suspension, enter the injector, where they get stuck in the nozzles. To fix the problem, you need to flush the injectors. You can do this yourself without removing them from the engine.

Poor quality gasoline

Troubleshooting on all VAZs can primarily occur if low-quality fuel gets into the air-fuel mixture formation system. Thus, most domestic gas stations do not have a very good reputation due to the fact that they sell fuel that does not meet the standards.

Problems with car tripping are often hidden in low-quality fuel.

So, if gasoline has already entered the system, it most likely clogged the gasoline supply system, and possibly left its mark on the spark plugs. In the worst case, what all car enthusiasts fear is burnout of the valves or piston mechanism.

Therefore, it is better to take the choice of a gas station seriously, since major engine repairs will cost more than saving on good gasoline. It is recommended to overpay a little for fuel, to regularly change fuel cells and carry out constant repairs.

Ignition

But it may turn out that when you unscrew the spark plug, you will see that it is wet. This indicates there is no spark. As a result, fuel combustion does not occur. The ignition is checked in the following order:

First, let's visually evaluate the candle. It should be brown-sand color. If it is darker, then it may be faulty. It is advisable to check it on a special stand. The spark should be blue and white. If it is yellow or red, then this is a bad sign. You can, of course, try to clean it with sandpaper, but this may not bring the desired effect;
Try using another spark plug and check how the engine runs. If everything returns to normal, then the cause has been found. Also check the high voltage wire;
After this, check the ignition coil. It is the weakest ignition part in the Priora. To check, we reset errors from the ECU. And with the ignition off, they swap the supposedly non-working ignition coil with the obviously working one. The engine starts for a couple of minutes. The diagnosis is repeated. If the flash miss “migrated” along with the coil, the problem is in it. Replace it with a new one.

Fuel cells

The first place a motorist should start looking for a problem is the fuel supply to the fuel mixture formation system. Often, clogging of elements can cause an insufficient amount of fuel to flow into the combustion chambers.

First, we check the operation of the fuel pump, or more precisely, an element such as a mesh filter. It is located on the pump itself and often becomes clogged due to the use of low-quality fuel. But, as soon as it is changed, the operation of the power unit returns to normal.

The problem may be caused by a malfunction of one of the fuel cells.

It is recommended to replace the fuel filter along with the filter screen of the gasoline pump, since in this case it becomes clogged and fuel cannot fully pass through the fuel lines. The part is placed under the rear right wheel from the bottom. The element is changed within 30 minutes.

The third element, which is responsible for supplying the fuel mixture, is the injectors. Their contamination leads to the fact that the engine begins to stall. In order to check their functionality, it is necessary to remove the elements from the engine.

Diagnostic operations are carried out on a special washing stand. If during the inspection it is discovered that there are faulty injectors, then they should be replaced. You should not install faulty parts in the power unit, as this will lead back to tripping and even greater malfunctions than the existing ones.

Sensors

Engine friction can be caused by 2 sensors. One of them is the idle speed sensor. If he makes a mistake, the engine will stall when cold. After warming up everything returns to normal. The problem may also be caused by the crankshaft position sensor. Usually the problem with it is visible during diagnosis.

Conclusion

. There are many engine-related malfunctions. At the same time, even seemingly harmless ones can cause a bunch of other problems. Therefore, it is important to know all the reasons why the Priora 16-valve engine triples. This will help you quickly eliminate the problem, which significantly reduces engine life. It also brings closer the need for major repairs.

After the races, such nonsense began: at idle the car was shaking, the exhaust was dark (as if it was overflowing) BUT the check light did not light up. Fuel consumption is probably 30 liters per 100. I unscrewed the spark plugs - the carbon deposits are just crazy - the spark plugs are all black. I changed the spark plugs and installed Bosch platinum - no effect =( The engine doesn’t stall at speed, but when you sharply let off the gas, it almost stalls. The revs drop to 400-500 until you rev it up... I turned off the mass air flow sensor - a slight drop in revs for a split second - then it continues to stall. Who? what can you recommend?

PS I myself understand perfectly well that you need to go for diagnostics =) I just want to listen to advice - you never know who has had such a sore...

Troubles when cold - Community "Lada Priora (Lada Priora Club)" on DRIVE2

Hi all! I recently wrote a post about a stuck pump, and so, the valves still had to be changed (( We changed all 16 valves, oil seals, and at the same time the injectors, because two had a burst housing, and the mileage was 111 thousand, the car definitely started to drive more cheerfully .But today I start it and it starts up. And I held it at 2-3 thousand revolutions, it works more or less, I release the pedal - it starts and the check blinks, and then goes out. As a result, I kept it at 2 thousand until 90 degrees, the work leveled off, I released the pedal - that's it normal. And all evening I drove everything was fine. I started it when it was hot, no problems. Right now I decided - let me check. The engine has cooled down. I start it - it troits. First - I determine the cylinder - the second. I change the coils, remove the terminal - it still troits 2. I cleaned the throttle, no changes. I just recently changed the spark plugs. Unfortunately, I don’t have a scanner at hand, but even without it it’s clear that there are misfires in cylinder 2, but here’s why? In theory, if the valves weren’t seated well, it would be misfiring all the time, right? By the way, the hydraulics are rattling alone, have you heard that they can also cause triple noise?

Danger of malfunction

When the power plant starts to stall during acceleration, it is very unsafe. In this case, power is reduced, the overall level of compression and dynamics of the car is sometimes simply not enough to complete the maneuver. Therefore, immediate repair is indicated here.

So, in addition to a decrease in twitching, power, lack of acceleration and other undesirable sensations, an engine operating without one cylinder can quickly become unusable. And the reason is very banal: the inactive cylinder still receives fuel that does not burn. Undoubtedly, the fuel is thrown back through the valve, but a certain part of it settles on the walls of the car cylinder. Because the rings are not able to perfectly clean the cylinder walls, some of the fuel enters the crankcase, mixing with the oil. The composition of gasoline and oil is considered insufficient for high-quality lubrication, therefore, the power unit overheats.

At the same time, grooves appear on the cylinders and the piston group is disrupted. Due to severe wear, the compression ratio decreases, and the car owner will have to overhaul the engine. Taking into account the fact that the production of the Lada Priora began in 2007, it is not uncommon to see cars with a knocking sound in the engine, reminiscent of old cars. The reasons are the same - driving on an engine that revs up during acceleration. Even if the car has new firmware, if the cylinder is switched off regularly, the drive will not last long. Under no circumstances should you drive for a long time if the engine starts to stall. Try to move slowly while keeping an eye on the temperature gauge. In addition, on the eve of the trip it is worth checking the oil level.

Taking into account the fact that there are many factors for unstable engine operation in a Priora, it is advisable to contact a trusted service station.

Engine diagnostics

Why does the Lada Priora engine stall? Before proceeding with the analysis of the mechanical part of the fault, many owners and mechanics recommend conducting computer diagnostics of the car. Maybe you really shouldn’t go into the mechanical part and look for faults there, but just look at what the electronic engine control unit shows in this case.

So, for computer engine diagnostics you will need a vehicle connection cable (OBD II), a laptop or tablet, and the appropriate software.

Having connected and synchronized with the car, we diagnose the condition of the engine, and also analyze the errors that it generated. Based on this information, you can understand whether all sensors are working properly, and whether there are problems in the software.

The next step is to check the engine sensors using a tester. They are diagnosed by ringing the contacts to see if they are working in the on-board network and if there is an impulse that goes to the ECU. So, what sensors need to be checked:

Coolant temperature sensor.
Mass air flow sensor.
Idle speed regulator.
Knock sensor.
Crankshaft position sensor.

If any of these meters fails, it must be replaced. After this, it is recommended to reset all errors that were detected in the control unit. The electronic procedure is completed.

Trouble the engine: why is it dangerous?

This is a rather critical phenomenon, especially if the unit begins to vibrate during acceleration.

Considering that the Lada Priora has been manufactured since 2007, there are often instances where the engine knocks like on an old car 20 years ago. This is an engine running on three cylinders. It may have the latest firmware, but if the engine of a Lada Priora car is running rough and the check light is on, then such a car will not have much life left.

People help, there is a problem with the VAZ 211440, the 3rd cylinder is missing

October 8, 2011, 12:55 #1
The car turns off cylinder 3

I have already changed: spark plugs, wires, ignition module, injectors, sensors, brains, fuel pump, valves on cylinder 3.

The machine also crashes, when resetting the errors from the BC, the machine runs for 15-40 seconds and crashes again.

HELP who will say what?

Car VAZ 211440

October 8, 2011, 13:04 #2

tema86 rus, October 8, 2011, 12:55

We'll have to wait. There are several specialists here. But probably not right away

October 8, 2011, 16:22 #3

Serega_karel, October 8, 2011, 13:04

We'll have to wait. There are several specialists here. But probably not right away

Well, I hope I won’t wait long

Republic of Dagestan, Khasavyurt

October 8, 2011, 19:39 #4 + 2

tema86 rus, October 8, 2011, 12:55

The car turns off cylinder 3

I have already changed: spark plugs, wires, ignition module, injectors, sensors, brains, fuel pump, valves on cylinder 3.

The machine also crashes, when resetting the errors from the BC, the machine runs for 15-40 seconds and crashes again.

HELP who will say what?

Car VAZ 211440

that is, I changed everything but the 3rd cylinder does not work, it doesn’t happen..

1) CHECK the compression of all cylinders

2). Which spark plugs have a spark leak? If all of them do, that means only the injectors are left.

Do the cords from the injector short to ground?

Chevrolet Lacetti Station Wagon

October 8, 2011, 20:02 #5

If there is a misfire at idle, there may be air leaks in the intake manifold; the exhaust valve does not fit tightly, and if you listen, there should be a whistle under the valve cover. if when driving under load, misfire may occur due to a lean air-fuel mixture and the above.

Republic of Dagestan, Khasavyurt

October 8, 2011, 20:10 #6

SERGE, October 8, 2011, 20:02

correct, but air leaks affect stable idling, but should not fluctuate when accelerating

October 8, 2011, 21:27 #7

compression is everywhere. spark comes too. Here it turns out that the car runs for 10-15 seconds, then blinks. Check starts to rub the car, it rubs, the voltage disappears almost completely on the 3rd injector. if I erase the error code the machine still works for 10-15 seconds

October 8, 2011, 21:28 #8

master05, October 8, 2011, 19:39

Do the cords from the injector short to ground?

Is it possible to look at the cords from the injectors?

Lada Priora all road, 4+4, automatic

October 8, 2011, 21:30 #9

looks like injectors...you can also measure the pressure in the fuel line, or maybe the valve is burnt out

October 8, 2011, 21:34 #10

tema86 rus, October 8, 2011, 12:55

The car turns off cylinder 3. I have already changed: spark plugs, wires, ignition module, injectors, sensors, brains, fuel pump, valves on cylinder 3. The machine also crashes, when resetting the errors from the BC, the machine runs for 15-40 seconds and crashes again. HELP someone say what Car VAZ 211440 2010. 72 t. mileage 1.6 8 valve engine

I have already mentioned this more than once, but I think it will not be superfluous. Brother has a Kalina 1.6 8 cl, Troilus both cold and hot, it turned out that there was an air leak through the sealing rubber of the injector, changed it and how the grandmother whispered. The injectors were sweaty, one even had gasoline leaks. Perhaps your case.

Lada Kalina 11184 luxury

October 8, 2011, 21:40 #11

Doberman_54, October 8, 2011, 21:34

I would write it. But everything...is obviously in good order. What I mean is that almost everything has been replaced.

One cylinder is not working, what should I do?

“Engine trouble” is the name given to a malfunction when one cylinder in the engine does not work. There are times when two cylinders do not work at once. But this happens very rarely. Therefore, let us consider in detail the situation when one cylinder does not work.

Moreover, the causes of the malfunction, their search and elimination, equally apply to the situation when two cylinders do not work.

By what signs do you know that one cylinder of the engine is not working? It's simple. Based on body vibration, interruptions in the work cycle and a strange sound that differs from the smooth operation of the engine. You will understand. If the engine is running rough, you can’t help but notice it in the car’s behavior.