We are a Belt Tensioner Pulley Factory, how to solve the abnormal "squeaking" sound of the pulley? In the process of repairing the car, there may be many abnormal noises in the car engine, such as abnormal noise caused by air intake leakage (air-oil separator), the abnormal sound of belt aging and looseness, the abnormal sound of belt pulley, engine knocking, valve sound, and some auxiliary...