1 Maintenance of motorcycle spark Classic Motorcycle Manufacturers The spark plug is an important part of the motorcycle engine, and it is also an important guarantee for the normal combustion of the fuel mixture and the normal operation of the engine. At present, there are many types of spark plugs, but according to the different calorific value of the spark plug, it can be divided into three types of different calorific value spark plugs: cold type, medium type and hot type. For engines with high compression ratio and high speed, cold spark plugs should be used; while for engines with low compression ratio and low speed, hot spark plugs should be used, and medium-sized spark plugs are available between the two. If the performance ratio of the engine cylinder decreases, the spark plugs are prone to carbon deposits and oil stains. Choose a spark plug with a heat value of medium or cold type to improve the spark plug's ability to resist carbon deposits and oil stains. During daily maintenance, the spark plug must be replaced or selected according to the approved model type of the vehicle. At the same time, special attention should be paid to the quality and quality of the product. For example, spark plugs of the same type have differences in quality and service life.Especially for spark China scooter manufacturers with low price and poor quality, it will be obvious during use that the end surface of the center electrode will gradually change to the arc switch, and the side electrodes will also change. It will change to the concave arc shape, causing the electrode gap to increase, weakening the intensity of the electric spark during discharge, and directly affecting the working state of the engine. In the normal driving process of the motorcycle,
