What Causes the Timing Chain to Make Abnormal Noises?

[ArcherLee]

The reasons for abnormal noises from the timing chain include: 1. The timing chain has been stretched; 2. Abnormal timing sprocket; 3. Severe wear of the chain guide; 4. Lack of tension in the chain tensioner. Compared to timing belts, timing chains have better durability, save space, and are maintenance-free for life, which leads many people to overlook their maintenance. Timing chains require regular oil changes, and low-quality oil should not be used. To prevent increased clearance due to wear, the system is equipped with a chain tensioner, which operates based on oil pressure. If there is an issue with the lubrication system, abnormal oil pressure can cause excessive chain clearance, leading to abnormal noises. When this problem occurs, it is necessary to inspect and repair it promptly to prevent tooth skipping and engine damage.