What is the sound when releasing and stepping on the accelerator again?

1 Answers
DelaneyLynn
07/29/25 11:47pm
Releasing and stepping on the accelerator again produces a knocking sound from the engine. The professional term for this sound is "engine knocking". Causes: The main cause is carbon deposits on the top of the piston. These deposits form a highly intense hot surface, causing the fuel-air mixture in the combustion chamber to ignite spontaneously before the ignition stroke due to the carbon deposits. Although this combustion appears sufficient, it is spontaneous and premature, not occurring within the designated stroke, resulting in a metallic sound from the piston hitting the cylinder wall. Hazards: Engine knocking should be repaired promptly. Prolonged and severe knocking can lead to premature wear of cylinder components, significantly shortening the vehicle's service life.
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