The excellent performance of the spark plug can improve the dynamic performance of the vehicle, vehicle maintenance, should pay more attention to the status of spark plug.

Typically, the service life of the spark plug is 15000 km long, the service life of the spark plug is not more than 30000 kilometers. However, many owners of the spark plug often appears such and such problem, not up to its normal service life.

Spark erosion

When the owners found the spark plug top has scars or damaged, electrode melting, ablation phenomena, that spark plugs have been destroyed, this time you should replace spark plugs. In the process of replacing the owners can check the spark plug ablation of the signs, as well as changes in color. This phenomenon indicates that the combustion chamber temperature too high. This may be a combustion chamber deposits too much, thereby causing the valve clearance is too small, which further exhaust valve overheating or cooling device working poor. In a spark plug without the required torque tightening can also be caused by the electrode's melting, insulator appears white phenomenon. In general, detonation combustion is the main reason of insulator rupture. While premature ignition time, gasoline octane number is low, the combustion chamber temperature is too high, it may lead to engine knock combustion.

Spark plug having sediment

Spark plug insulator tip and electrode sometimes stick on sediments. The owners do not belittle this sediment. Serious when the situation may cause the engine not working properly. In cleaning the spark plug, the vehicle can be normal operation temporarily, but soon will appear similar case. In fact, the spark plug appear sediment which is a superficial phenomenon, which may be other parts of vehicle problem signal. When the spark plug on oily sediment, suggests that the lubricating oil has entered the combustion chamber. If only individual spark plug having oily deposits, may be caused by damage to the valve stem seal. If the spark plug electrode and the internal black sediments, usually indicates the cylinder mixed gas too thick. The owner can increase the running speed of the engine, and continued for a few minutes, to burn the remaining on the electrode above a layer of black soot layer.