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THE PISTON KNOCKING
- Nov 19, 2018 -

What is a piston knocking?

In the operation of the engine, the piston knocks abnormal noise. The location of the piston knock is located on the upper part of the cylinder, which is a rhythmic click like the hammer hammering on the cement floor. When the engine is idle, the sound is clear and clear. Especially when the engine is running at low temperature, the sound is obvious. When the temperature rises, the noise will decrease or disappear.