The timing chain tensioner is vital to maintaining not only proper timing, but the life of the chain itself. Generally these will need to be replaced before the chain itself goes bad. Be sure to change yours at the proper intervals to avoid failure.
This guide is used to provide tension to the timing chain, but it wears over time. These plastic tensioners also become brittle with time and mileage, usually cracking and/or breaking completely. A common sign of worn timing chain components is noise from the timing chain area.
Show More Show Less