Universal motorcycle spark plug

The main cause of the motorcycle spark plug blackening is insufficient combustion. As long as the spark plug blackens, it is directly related to this cause. There are many reasons for the insufficient combustion of the engine, among which the more common one is the blockage of the air filter. During the use of the motorcycle, many users will ignore the existence of the air filter in the engine accessories. Although the manufacturer's maintenance manual has a clear maintenance cycle for the motorcycle engine accessories, after all, the user is not professional. In addition, it has not attracted enough attention. Therefore, if the air filter is not cleaned or replaced for a long time, the air intake will decrease and the combustible mixture will be too rich, This will affect the combustion state of the engine.