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Reasons for Engine Abnormal Noise During Rapid Acceleration?

1 Answers

LaJoseph

07/29/25 5:23pm

Acceleration engine abnormal noise is caused by abnormal engine speed conditions during operation. Reasons for abnormal noise during idle or low-speed operation: Causes include excessive clearance between piston and cylinder wall; overly tight piston pin assembly or connecting rod bearing assembly; excessive clearance between tappet and its guide hole; wear of camshaft profile; loose starter causing pulley noise. Reasons for chaotic noise at a certain speed: Camshaft timing gear fracture or loose fixing nut; broken crankshaft; loose piston pin bushing; excessive camshaft axial clearance or loose bushing.

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