Question about 2005 Cadillac CTS
There are three possible reasons why your timing chain is making the rattling noise.
1. Oil pressure is low: The tensioners that keep the timing chain tight are operated by oil pressure so if your oil pressure is low then the tensioner will not be working properly hence your chain will flap around and hit the guides.
2. Tensioner is stuck: If you have alot of oil gunk on your tensioner then the tensioner will be stuck and not extend out all the way to keep the timing chain tight.
3. Tensioner is broken: If your tensioner is mechanically broken then you need to replace it.
Having said that, before you follow this write-up it is a good idea to check your oil pressure. Also, in this write up I will not go over how to replace the tensioner but rather tell you how to clean it while it's still installed.
Posted on Jun 11, 2008
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Posted on Jan 02, 2017
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