The engine "Priora" (16 valves): causes and elimination of the problem. How to test the candles and the ignition coil "Lada Priora"
Despite the huge amount of criticism"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 a minor problem. One of the most popular faults is the engine of 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, thenthe engine does not work exactly 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, whenthe driver decides to overtake, but on the oncoming lane there are cars. In the process, while the motor is trod, the engine power is significantly reduced. Reduces the compression ratio - there may not be enough dynamics to successfully complete the maneuver.
If we take into account that Lada Priora is madesince 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 can be the latest firmware, but if the car "Lada Priora" is hit by the engine, a check is burning, 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.
If the engine "Priora" (16 valves) is tampered with,reasons can be trivial. 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 handset. They must be firmly attached to the throttle assembly. The fact that some parts are faulty, can report leaks of fuel, cracks, broken plastic.
Breakage of injectors, clogging
When the engine "Priora" (16 valves) is tampered with, the reasons are often in the nozzle.
It may be faulty or cornyclogged up. 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 mud 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.
Coil of injectors
It can not only get muddy - often on"Priora" burns the windings of the elements. In this case, the situation is easily restored by hand. The cover 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, thenit is recommended to completely dismantle the fuel rail and thoroughly wash each part. 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.
This is one of the possible reasons why the engine is at idle or moving.To return to normal operation, you cantry changing the dressing. 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.
Experienced motorist, who facedengine, running on three cylinders, immediately begins 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 failure, the problem is solved by replacingcandles. 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 tampered with, the reasons can be searched for a very long time, and the diagnostics will not give 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 on a cold or hot,you can check the candle on the candle. 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. It is possible to restore the operation of the motor by simply replacing the element.
Checking the ignition coil
A special technique by which you can checkwork details, 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 ("Priora" is not an exception) is firmly fixed to the motor.Then look reliability of electrical connectionsin the low-voltage circuit. If everything is correct, 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. Then twist the starter. If there is no spark, the coil is changed. If the flash is there, but the engine does not start, change the candle.
Because of the controller, the engine also worksis unstable. You can find it right in the car. Often the chip in the device burns out or it is poured by a liquid from the heater. Sometimes the water from the street gets into the salon after a good rain.If to speak about restoration, atcertain skills can be independently repaired. It is recommended to contact the service station or buy a new unit. In addition, the firmware can be executed only with special equipment.