The ignition coil is one of the most important technical components of any car brand. A serviceable ignition coil is a guarantee of uninterrupted operation of the vehicle engine.
The unstable operation of the engine of the domestic car Lada Priora may depend on many factors, and the failure of the ignition coil is one of those. As a rule, the sound of the engine operation helps to diagnose a breakdown of the coil. If this part is out of order, then the motor starts to "triple", in other words, it does not work at full capacity.
Naturally, if the ignition coil breaks down, you should immediately contact a car service. But if a breakdown occurs on the road, then you can try to cope with it on your own. It is quite possible to identify and fix a minor malfunction yourself.
Fault definition
If the engine suddenly began to "triple", then the first thing you should pay attention to is the appearance of the ignition coil. Signs that the part has overheated and eventually burned out are traces of deformation on its body, cracks and irregularities on the plastic surface.
To check the ignition coil, you need to use a multimeter, switching the device to resistance test mode. After that, the contacts of the multimeter must be simultaneously attached to the first and third contacts of the part and thus find out its resistance. If the coil is in good condition, then the device should show a value of about 0.5 Ohm with a small tolerance.
The next step in diagnosing the ignition coil is to check the secondary wiring of this part. To perform this procedure, you need to touch the spring located inside the ignition coil cap with a red dipstick. A black probe must be connected to the second contact. If the readings of the device are far from the value of 340 kOhm, then things in this case are not very good - it looks like the coil has burned out.
If the readings of the multimeter correspond to the norm, then, most likely, the ignition coil is in good order, and the only thing that needs to be done is simply to strengthen its insulation. To do this, you will need a special heat-shrink tube (must be in stock with every driver), which must be warmed up and put on a reel. This procedure will help to cope with the problem of possible leakage current on the Prior.
Better to be safe
After the expiration of the warranty period, the ignition coils (there are 4 of them on the Lada Priora car - one for each cylinder), it is advisable to change to new ones, and, if possible, to better ones. When replacing the ignition coil yourself, you must turn off the vehicle mass - this way the risk of damage to the electronics is minimized.
The average resource of a high-quality ignition coil (most often imported) is about one hundred thousand kilometers.
