The engine's valves can open and close during each cylinder's firing because a timing chain synchronizes the rotation of the crankshaft and camshaft(s), ensuring proper timing.
When does a timing chain need to be replaced?
- Unless there is a specific issue, a timing chain replacement is typically required between 80,000 and 120,000 miles.
- With higher mileage vehicles, chain problems are more frequent.
- It is advised to watch for timing chain failure signs if you are driving an older car or one with a lot less than 100,000 miles on the odometer.
- It's critical to be able to identify the signs of a timing chain problem so that it may be fixed before it becomes irreparable. Otherwise, the timing chain will need to be replaced.
- The following are indications that a timing chain needs to be replaced:
- Before an engine rattle, later model VVT applications will produce engine codes and check engine lights.
- Engine rattling is a result of older, pre-VVT applications.
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