Troit the Priora engine (16 valves): causes and troubleshooting. How to check the spark plugs and ignition coil "Lada Priora"

2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42

Despite the huge amount of criticism against the Lada Priora, this is one of the most popular cars that have come off the AvtoVAZ assembly line in recent years. "Priora" is equipped with a fairly successful engine with good dynamics, the interior turned out to be very comfortable. And in the maximum trim levels useful options are offered. But at the same time, from time to time, the car brings minor problems to the owners. One of the most popular malfunctions is the Priora engine (16 valves). The reasons for this phenomenon are rather unpleasant. And besides, the motor overheats as a result.

When a driver starts his car in the morning, the engine does not run smoothly, as before, but intermittently. From the exhaust pipe at this time, deaf sounds are heard. At the same time, a persistent and strong smell is felt.unburnt fuel. Vibrations are constantly growing, and this is fraught with cracks in the pillows. So the engine troit cold.

Troit motor: why is it dangerous?

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

This behavior of the motor is especially dangerous when the driver decides to overtake, but there are cars in the oncoming lane. In the process, while the engine is troiting, engine power is significantly reduced. The compression ratio is reduced - there may not be enough dynamics to successfully complete the maneuver.

Given 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 a three-cylinder engine. The latest firmware may be installed, however, if the engine is troiting on the Lada Priora car, the check is on, then such a car will not last long.

Typical causes and safety precautions

It is worth considering that there are a lot of possible reasons why one of the cylinders is turned off.

Some faults can be identified and eliminated even without material costs. Others are diagnosable. As a result, the motor may need to be replaced or overhauled.

Power system

If the Priora engine (16 valves) is troiting, the reasons may be banal. When there is no flash in the cylinder, it is possible that there is simply no fuel there. If it has a normal compression ratio, it is worthdiagnose 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, that the body of the cleaner itself is intact, and that there is no air leakage from outside. Also pay attention to the tubes. They must be tightly fixed on the throttle assembly. The fact that some parts are faulty can be reported by fuel leaks, cracks, broken plastic.

Nozzle breakage, clogging

When the Priora engine (16 valves) trips, the reasons often lie in the nozzle.

It may be defective or simply clogged. Often, beginners and lovers of pouring various cleaning liquids for injectors into the tank face such a problem. All this leads to the fact that the dirt first exfoliates in the tank, then in the fuel line. And as a result, it will fall into the nozzles, where it will safely get stuck.

Injector winding

It can not only become clogged with dirt - the windings of elements often burn out on the Priors. In this case, the situation is 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 less, the element should be replaced.

How to troubleshoot injectors?

If the resistance is normal, then it is recommended to completely dismantle the fuel rail and thoroughly wash every part. Do not perform this operation if there is no experience in this work. Valves must be opened for flushing.nozzles. Then apply an aerosol wash under pressure. It's not difficult, but without experience, you can ruin everything.

Poor quality fuel

This is one of the possible reasons why the engine dies when idling or while driving.

To return to normal operation, you can try changing the gas station. This usually helps to correct a lot of misunderstandings. It is better to fill the 16-valve Priory engine with good 95th gasoline. Pouring something with a higher octane rating is not worth it. This will only lead to overheating. You can also try replacing the filters - air and fuel. Sometimes this solves the problem.

Ignition system

An experienced car enthusiast who has encountered a three-cylinder engine immediately starts diagnosing spark plugs. "Lada Priora" should cool down well, otherwise there is a risk of getting burned when unscrewing. If after a few seconds you turn off the ignition and check the candles, then one of them will be wet with gasoline. It is also recommended to separately check each part for sparks.

In the event of a malfunction, the problem is solved by replacing the spark plug. Sometimes it is enough to press down a potentially faulty one with a cap - the machine will resume normal operation. In general, the ignition system in this car is the most problematic part. If the Priora engine is troiting (16 valves), the reasons can be looked for for a very long time, and the diagnostics will not give anything, even if it is done correctly. And only by replacing all the elementsyou can come to a positive result.

Diagnostic candles on the fly

When the engine is troiting cold or hot, you can check the carbon deposits on the candles. If the coating is white, then this indicates a lean mixture and engine overheating. A black tint indicates an enriched mixture. Both in the first and in the second case there are problems with the operation of the electronics. This is either installing a new firmware, or replacing the ECU. A normal candle has a brick color. By the way, the engine can triple at idle if the part is damp. Also because of this, the warm-up time is significantly increased. In addition to candles, the ignition coil can also act 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.

Checking the ignition coil

There is simply no special method by which you can check the work of parts. The instructions for the car indicate one of the ways to self-diagnose. So, with the ignition off, they check whether the ignition coil (Priora is no exception) is firmly fixed to the motor.

Then look at the reliability of the electrical connections in the low-voltage circuit. If everything is in order, then check for the presence of a spark. To do this, the ignition coil is removed. A test plug is inserted into the tip and pressed against the metal part of the engine. Next, turn the starter. If there is no spark, the coil is changed. If there is a flash, but the engine does not start, change the spark plug.

Controller

Because of the controller, the engine is also unstable. You can find it right in the car. Often the microcircuit in the device burns out or it is flooded with liquid from the heater. Sometimes water from the street gets into the cabin after a good rain.

If we talk about restoration, then with certain skills, self-repair is possible. It is recommended to contact the service station or buy a new unit. In addition, flashing can only be done with special equipment.

CV

So, we have considered why the car troit. These are not all possible reasons, but they help to accurately diagnose the operation of the motor and find a malfunction.