Thread: Cold rattle?
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Jim2 Jim2 is offline
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Join Date: Oct 2003
Location: Calgary
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Presuming you have lots of cycles on the engine in the last couple months and the noise has not changed (worsened) it's likely not an issue. A few things that come to mind however is valve train, piston/cylinder clearance, and tensioners. These items do have differences when cold versus warm which could make various sounds.

Sometimes exhaust systems can have loose or rubbing components which rattle a little when cold or warm due to expansion. Think - heat exchanger boxes on the headers.

Tough to be of much help without being there to listen with a stethoscope, but if the noise is minor, consistent, and dissipates, then it's probably a non issue.

Jim
Old 01-08-2007, 06:05 PM
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