Make sure the spark plug is the correct length for the engine.
确定火花塞爱发动机里面的深度正确与否。
The spark plug ion current signal carries along rich information about the engine combustion process.
火花塞离子电流信号携带着丰富的发动机燃烧过程的信息。
Guarantee the engine air cylinder, spark plug and oil passage are cleaned.
保证发动机气缸，火花塞和油路清洁。
Guarantee the engine air cylinder, spark plug and oil passage are cleaned.
保证发动机气缸，火花塞和油路清洁。
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