How often should motorcycle spark plugs be replaced?

1, the replacement cycle of ordinary motorcycle spark plug is about 30 thousand kilometers; The replacement mileage of ordinary copper core spark plug is 30 thousand kilometers; Yttrium gold spark plug replacement mileage of 50 thousand kilometers; The replacement mileage of platinum spark plugs is 50,000 kilometers.

2. In the ignition system of gasoline engine, high voltage current generates sparks through the cylinder to ignite the components in the combustible mixture. It mainly consists of a connecting nut, an insulator, a connecting screw, a center electrode, a side electrode and a shell, wherein the side electrode is welded on the shell.

3. The electrode gap of spark plug has a great influence on the work of spark plug. The gap is too small and the spark is weak, which is easy to cause carbon deposition and leakage. The gap is too large, the required breakdown voltage increases, the engine is not easy to start, and the phenomenon of "ignition" is easy to occur at high speed, so the spark plug gap should be appropriate.

4. In general, the spark plug gap used in the battery ignition system is 0.7-0.8mm, which is a single spark.

Extended data:

In spark plug standards, the thermal characteristics of spark plugs are usually described by calorific value, which reflects the balance between heat absorption and heat dissipation of spark plug insulator skirt. The higher the calorific value, the higher the calorific value.

Therefore, the calorific value of the hot spark plug is lower than that of the cold spark plug. Generally speaking, high-power and high-compression engines use cold spark plugs with high heat value.

On the contrary, engines with low power and low compression ratio use hot spark plugs with low calorific value. The selection of spark plugs is generally determined by the manufacturer through product type tests, and it is not allowed to be replaced at will.