why should spark plugs be replaced and when to change the spark plug ?

Spark Plugs, why should spark plugs be replaced?

A spark plug is a very important part of the ignition system. It generates a high voltage between the two poles, which generates a current, which in turn generates an electric spark. However, because the ignition requirements of the engine are very precise, the heat value, shape and area of the spark determine the combustion efficiency, so it has a certain impact on fuel consumption and power output.

However, the continuous use of the electrode will gradually become shorter, and the working distance between the electrodes will become longer, thereby affecting the ignition performance. Due to the use of different oils and driving environment, there will gradually be stains and carbon deposits on the spark plug, which will affect the performance of the spark plug. At this time, the spark plug needs to be replaced.

If the ignition capacity is reduced, the fuel oil will be insufficient, and the fuel consumption will increase. If the situation is serious, the engine may have idling and jitter. When driving at low speed, there will be jitter, driving is weak, and there is a cold car. It is difficult to start the engine.

Spark plug life, when to change the spark plug

Under normal circumstances, the service life of ordinary copper core spark plug is 30,000 km, while the service life of precious metal spark plug (platinum, sheet metal) is 60,000 to 90,000 km. The maintenance period specified by different car manufacturers is not exactly the same, the specific replacement cycle Subject to the requirements of the car manufacturer.

If it is difficult to start the vehicle in the cool state, sometimes even the fire does not respond, or there is obvious frustration, idle speed jitter, engine acceleration performance, etc., most of which are spark plug aging.