How often should the car ignition coil be replaced?

[DelAthena]

There is no fixed replacement interval. As long as it functions properly, replacement is unnecessary. Its typical service life is around 100,000 kilometers or even longer. Introduction to car ignition coils: The ignition coil, also known as the high-voltage coil, is essentially a transformer device. Its initial energy comes from the battery's 12V voltage, but it delivers up to tens of thousands of volts to the spark plug. It is precisely through this energy conversion by the ignition coil that the spark plug can generate substantial energy, enabling the combustion of the air-fuel mixture in the engine cylinder. Signs of a failing car ignition coil: Identifying a faulty ignition coil is relatively straightforward. If the vehicle suddenly experiences abnormal shaking during operation, accompanied by a noticeable loss of power, it may indicate an issue with the ignition coil. Once the ignition coil malfunctions, the spark plug will cease to function, preventing the combustion of the air-fuel mixture in that cylinder. The vehicle will lose power when operating with one less cylinder, and in severe cases, it may even stall.