What is the reason for the abnormal noise in the Fabia engine compartment pulley?

[OliveDella]

The abnormal noise in the Fabia engine compartment pulley may be caused by belt aging. Reasons for the abnormal noise: The abnormal noise is usually caused by the aging of various belt groups in the engine and the smooth wear of the contact surface between the belt and the pulley. It often occurs when the engine speed changes rapidly, and sometimes the increased load on the accessories driven by the belt can also cause the belt to make noise. Solution: First, it is necessary to check whether the bearings of the accessories driven by the belt are damaged, stuck, loose, or if the accessory power has increased. If this is the case, the parts need to be replaced. In addition, the belt can be directly replaced. The belt can be replaced by yourself or at a 4S shop for repair.