What is causing this noise? (1 Viewer)

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Joined
Aug 22, 2009
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159
Location
Simpsonville, SC
This happens from a cold start up almost every time. It goes away eventually. I can't figure out where its coming from.

 
Get a mechanic's stethoscope, extend the hoses, and start poking around to see where it's loudest. I'd start on the valve cover...
 
The randomness of the noise leads me to the timing chain and tensioning system.
 
It's got a good beat, but I can't dance to it.


I think it sounds like a wrist pin in a piston.
 
It's got a good beat, but I can't dance to it.


I think it sounds like a wrist pin in a piston.
Not the doom and gloom already....
 

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