LADA PRIORA engine 16 valves tripping: causes, solutions

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.

Reasons why the Priora 16 valve engine is tripping. Nothing new

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 consequences

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 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.

Nutrition

A missed flash may occur due to the fact that there is simply nothing there to burn, that is, to catch fire. So first, start the engine. When it has been running for a few minutes, turn it off and unscrew 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 on Priora 16 valves 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 nozzle. 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 it gets stuck in the nozzles. To solve the problem you need to flush the injectors. You can do this yourself without removing them from the engine.

These are the main reasons for engine tripping due to power problems. It should be noted that winding damage is the most common malfunction on such motors.

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, no fuel combustion occurs. The ignition check is carried out 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 give 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 will reset the ECU errors. And with the ignition off, they swap the probably non-working ignition coil with a known 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.

Sensors

. Engine friction can cause 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 of these 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 the reasons why the Priora 16-valve engine is tripping. This will help you quickly eliminate the problem, which significantly reduces engine life. It also brings closer the need for major repairs.

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.

Troubles the engine

Cars January 28, 2017

Despite the huge amount of criticism against the Lada Priora, this is one of the most popular cars that have come out of the AvtoVAZ assembly line in recent years. The Priora is equipped with a fairly successful engine with good dynamics, and the interior is very comfortable.

And the maximum trim levels offer useful options. But at the same time, from time to time the car brings minor problems to its owners. One of the most popular malfunctions is that the Priora engine (16 valves) is tripping. The reasons for this phenomenon are quite unpleasant.

And besides, the motor eventually overheats.

When the driver starts his car in the morning, the engine does not run smoothly as before, but intermittently. At this time, dull sounds are heard from the exhaust pipe. At the same time, a persistent and strong smell of unburned fuel is felt. Vibrations are constantly increasing, and this is fraught with cracks in the pillows. This is how the engine runs when cold.

Trouble the engine: why is it dangerous?

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.

Supply system

If the Priora engine (16 valves) is tripping, the reasons may be trivial. When there is no flash in the cylinder, perhaps there is simply no fuel there. If it has a normal compression ratio, it is worth diagnosing the power system. You should pay maximum attention to the air filter and the pipe.

It is necessary to make sure that the clamps are securely tightened, whether the purifier body itself is intact, and whether there is any air leakage from the outside

Also pay attention to the tubes. They must be tightly secured to the throttle assembly

Fuel leaks, cracks, and broken plastic may indicate that some parts are faulty.

When the Priora engine (16 valves) fails, the reasons often lie in the injector.

Injector winding

It can not only become clogged with dirt - often the windings of the elements burn out on Priors. In this case, the situation can be easily restored with your own hands. The cover is removed, and then the manifold. Next, the injector windings are checked. Using a multimeter, measure the resistance of the windings. It should be around 11-15 ohms. If the indicators are lower, the element should be replaced.

How to troubleshoot injector problems?

If the resistance is normal, then it is recommended to completely dismantle the fuel rail and thoroughly wash each part. You should not perform this operation if you have no experience in this work. To flush, the nozzle valves must be opened. Then apply aerosol washing there under pressure. It's not difficult, but without experience you can ruin everything.

Diagnostics of spark plugs by plaque

When the engine starts cold or hot, you can check the carbon deposits on the spark plugs. If the coating is white, then this indicates a lean mixture and overheating of the engine. A black tint indicates a rich mixture. In both the first and second cases there are problems with the operation of the electronics. This is either installing new firmware, or replacing the ECU.

A normal candle has a brick color. By the way, the engine may stall at idle if the part is damp. This also significantly increases the warm-up time. In addition to the spark plugs, the ignition coil may also be acting up. Priora (8 valves) is equipped with distributor ignition. Overheating of the coil is often observed.

You can restore the operation of the motor by simply replacing the element.

Summary

So, we looked at why the car is tripping. These are not all possible reasons, but they help to accurately diagnose the operation of the motor and find the malfunction.

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.

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...

Jerks when moving

The moment the car starts moving, most often there is a failure. Unpleasant sensations are associated with a delay in the engine's response to pressing the accelerator pedal. In some cases, the engine stalls. A jerk occurs when the throttle valve opens, when, based on a signal from its position sensor, the ECU determines the moment of transition from cold mode to load mode. This is aimed at increasing the amount of fuel supplied through the injectors. Due to insufficient pressure in the fuel line, there is not enough fuel to move the Lada Priora smoothly.

For this reason, the car stalls when accelerating. In this case, the electronic control unit of the engine, having received a message from the throttle position sensor about the intensive opening of the damper at a large angle, strives to increase the fuel supply as much as possible. This is impossible to do due to low fuel pressure.

During steady motion, jerking is caused by a malfunction of the ignition system. In this situation, the vehicle will need to be diagnosed and repaired. If this problem occurs on the road, then auto mechanics advise Lada Priora owners to follow these steps:

Maximum acceleration of Lada

inspect the space under the hood - turn off the ignition, and then check that the wiring harness blocks are securely attached to the ignition coils. You need to start the engine, listening to its operation: the crackling sound during a high voltage breakdown is weak, but clear. In complete darkness, a spark should be visible upon breakdown,
Replace spark plugs regardless of mileage and condition. You need to pay attention to the condition of the spark plugs: if it is abnormal, then you will need to repair the engine or its elements. Causes jerking during steady movement of Lada with an injector, a possibly faulty throttle position sensor. Additional reasons confirming the malfunction of this unit are: uneven operation of the engine at idle, reduction in maximum engine power.

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.

Main reasons

The car starts to act up at speed.
On the Lada there are hydraulic compensators on the valves; they automatically adjust the clearances in the valve mechanism. These devices are sensitive to oil starvation. As a result of a decrease in the level of this substance, fingers knock when accelerating the car. This knocking sound is also produced in the following situations:

the filter or oil receiver in the crankcase is clogged,
there is no operating pressure in the oil pump,
Timing oil channels are clogged.

Jerking is another common problem that is associated with a short-term spontaneous change in the speed of the engine crankshaft, regardless of the position of the accelerator pedal. In daily use, a whole series of jerks appear. The limiting case of this phenomenon - failures during acceleration of the Lada Priora - is a noticeable delay in the engine's response to pressing the accelerator pedal.

There are several reasons for jerking:

when starting to move,
when accelerating,
with the accelerator pedal in constant position.

You can determine the reasons why a Lada with an injection engine stalls when accelerating using special diagnostic equipment. In most cases, jerking is caused by insufficient fuel pressure in the corresponding rail, a malfunction of the mass air flow sensor or the throttle position sensor.