What Causes the Engine Pulley to Make Abnormal Noises?
1 Answers
Reasons for engine belt abnormal noises: 1. Common misconception: Many people think it's caused by the belt being too tight or too loose, but these are just superficial phenomena. Adjusting the tensioner cannot solve the fundamental problem. 2. The real reason: In winter, the belt squealing in cars is mainly due to the cold weather, which hardens the rubber, causing it to lose elasticity. This leads to slipping between the tensioner surface and the rubber surface. Therefore, it's not about the belt being too loose or tight, but the rubber becoming too hard, reducing friction and causing slipping, which results in abnormal noises. Here are the harms of engine abnormal noises: Long-term slipping can easily wear out the belt and tensioner, eventually loosening the belt, twisting the bearings, and causing the entire motor to fail.