Does replacing the timing chain affect the engine?

[Naomi]

Replacing the timing chain does affect the engine. Poor replacement can impair the engine's functionality, while a good replacement can enhance it. Additional information: 1. When the chain stretches, abnormal symptoms may occur, such as the malfunction indicator light turning on or noticeable noise during idle. At this point, the chain needs to be replaced. 2. If not replaced, minor issues like abnormal power output and excessive noise may arise, while severe cases can lead to skipped teeth, further affecting performance. Skipping one tooth will cause inaccurate timing and make normal driving impossible; skipping two teeth can result in valve collision. 3. Some vehicles can use computer diagnostics to determine if replacement is necessary. If the inspection exceeds the maximum limit, immediate replacement is required even if no abnormalities are currently present, as the risk of skipped teeth and valve collision is very high.