The engine "Priora" (16 valves): causes and elimination of the problem. How to test the candles and the ignition coil "Lada Priora"

Despite a huge amount of criticism of the "Lada Priora", this is one of the most popular cars that came off the conveyor of AvtoVAZ in recent years. "Priora" is equipped with a fairly successful engine with good dynamics, the cabin turned out very convenient. And the maximum options offer useful options. But at the same time from time to time the machine brings the owners of minor problems. One of the most popular faults is the engine "Priora" (16 valves). The reasons for this phenomenon are quite unpleasant. And besides, the motor overheats in the end.

When the driver starts his car in the morning, the engine is not working as smoothly as before, but with interruptions. At this time, deaf sounds are heard from the exhaust pipe. At the same time, there is a strong and strong smell of unburnt fuel. Vibrations are constantly growing, and this is fraught with cracks in the pillows. So the engine moves to the cold one.

Trouble motor: what is dangerous?

This is quite a critical phenomenon, especially if the unit starts to vibrate during acceleration. Especially dangerous is the behavior of the motor when the driver decides to overtake, but on the oncoming lane there are cars. In the process, while the motor is moving, the engine power is significantly reduced. Reduces the compression ratio - there may not be enough dynamics to successfully complete the maneuver.

If you take into account that Lada Priora has been manufactured since 2007, there are often instances where the engine knocks as it did on an old car 20 years ago. This is the work of a motor on three cylinders. It may be the latest firmware, but if the car "Lada Priora" is hit by the engine, a check is lit, then this car is not very long.

Typical causes and safety techniques

It should be noted that there are a lot of possible reasons for switching off one of the cylinders. Some faults can be identified and eliminated even without material costs. Others are diagnosed. As a result, it may be necessary to replace the motor or overhaul.

Supply system

If the engine "Priora" (16 valves) is damaged, the reasons can be banal. When there is no flash in the cylinder, perhaps there is simply no fuel. If it has a normal compression ratio, it is worthwhile diagnosing the power system. Pay close attention to the air filter and the nozzle. It is necessary to make sure that the clamps are tightened securely, whether the cleaner body itself is intact, whether there is air sucking from outside. Also pay attention to the tubes. They must be firmly attached to the throttle assembly. The fact that some parts are faulty, can report fuel leaks, cracks, broken plastic.

Breakage of injectors, clogging

When the engine "Priora" (16 valves) is tampered with, the reasons are often in the nozzle.

It can be malfunctioning or corny. Often with such a problem, beginners and amateurs are faced with pouring various cleaning fluids into the tank for injectors. All this leads to the fact that the dirt first flakes off in the tank, then in the fuel line. And eventually it will fall into the nozzles, where it will safely get stuck.

Winding of injectors

It can not only clog dirt - often on the "Priora" burning windings of the elements. In this case, the situation is easily restored by hand. The lid is removed, and then the collector. Next, the windings of the injectors are checked. Using a multimeter, the resistance of the windings is measured. It should be about 11-15 ohms. If the indicators are smaller, the element should be replaced.

How do I troubleshoot injectors?

If the resistance is normal, then it is recommended to completely dismantle the fuel rail and flush each part thoroughly. Do not perform this operation if there is no experience in this work. For flushing, open the injector valves. Then apply aerosol flushing under pressure. It's not difficult, but without experience you can spoil everything.

Low-quality fuel

This is one of the possible reasons why the engine is at idle or moving. To return to normal operation, you can try changing the refueling. Usually it helps to fix a lot of misunderstandings. 16-valve engine "Priora" is better to fill with a good 95-m gasoline. Pouring something with a higher octane number is not worth it. This will only lead to overheating. You can also try to replace the filters - air and fuel. Sometimes this solves the problem.

Ignition system

An experienced car enthusiast who collided with an engine running on three cylinders immediately starts to diagnose the candles. "Lada Priora" should cool down well, otherwise when unscrewing there is a risk of getting burned. If after a few seconds, turn off the ignition and check the candles, then one of them will be wet from gasoline. It is also recommended to separately check each part for a spark. In case of malfunction, the problem is solved by replacing the spark plug. Sometimes it is enough to crush a potentially faulty hood - the machine will resume normal operation. In general, the ignition system in this car is the most problematic part. If the engine "Priora" (16 valves) is hindered, the reasons can be searched for a very long time, and the diagnosis will not do anything, even if it is done correctly. And only by replacing all the elements can we come to a positive result.

Diagnosis of candles on the fly

When the engine is trodden to the cold or hot, you can check the candle on the candles. If the plaque is white, then this indicates a depleted mixture and overheating of the engine. A black tint indicates an enriched mixture. And in the first and second case there are problems with the work of electronics. This is either the installation of a new firmware, or the replacement of the computer. A normal candle has a brick color. By the way, the engine can touch at idle if the part is damp. Also because of this, the warm-up time is significantly increased. In addition to the candles, the ignition coil can also be jammed. "Priora" (8 valves) is equipped with a tumbler ignition. Often there is overheating of the coil. You can restore the work of the motor by simply replacing the element.

Checking the ignition coil

A special technique by which you can check the work of parts, just do not. In the instructions to the car one of the ways of self-diagnosis is indicated. So, with the ignition off, check to see if the ignition coil is firmly fixed ("Priora" is not an exception) to the motor. Then, the reliability of electrical connections in the low-voltage circuit is looked at. If everything is all right, then check for the presence of a spark. For this purpose, the ignition coil is removed. A test candle is inserted into the tip and pressed against the metal part of the engine. Next, twist the starter. If there is no spark, the coil is changed. If there is a flash, but the engine does not start, change the candle.

Controller

Because of the controller, the engine is also unstable. You can find it right in the car. Often the chip in the device burns out or is flooded with liquid from the heater. Sometimes the water from the street gets into the salon after a good rain. If we talk about the restoration, then with certain skills, self-repair is possible. It is recommended to contact the service station or buy a new unit. In addition, the firmware can be executed only with special equipment.

Summary

So, we have examined why the machine is trod. These are not all possible causes, but they help to accurately diagnose the motor and find a malfunction.