How to Deal with Engine Belt Abnormal Noise?

[NoahFitz]

Engine belt abnormal noise can be addressed in three main ways. Below is an introduction on how to handle engine belt abnormal noise: 1. Check whether the accessories driven by the belt have damaged bearings, are stuck, loose, or if the accessory power has increased. 2. Replace the belt, or use No. 100 sandpaper to polish the contact surface between the belt pulley and the belt. 3. As a temporary solution, you can drip 1-2 drops of engine oil on the contact surface between the belt and the pulley. Most belt automatic tensioners have a set of belt wear length indicators somewhere along the sliding direction between the bottom of the tensioner and the tensioner arm. These indicators consist of a pointer and two to three marks, indicating the working range of the belt tensioner. If the pointer exceeds this range, the belt is likely overstretched and should be replaced. For vehicles without an automatic belt tensioner, use a standard belt elongation measuring tool to measure at the midpoint between the two pulleys. If there is a deviation from the standard value, it is best to replace the belt.