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Old 11-26-2012, 12:22 PM
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Diesel911 Diesel911 is offline
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Join Date: Sep 2007
Location: Long Beach,CA
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X2 on listening to where the sound comes from.

When the Air Filter Bracket/Air Filter Housing is loose or broken it sounds like something is going to come off of the Engine.

I had a rattling sound in the front of the Valve Cover and it turned out the small upper Timing Chain Guide (#89 in the pic) was loose. Tightend the Bolt up and no more issues for over 4 years.
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Awful engine rattle-engine-shows-timing-chain-upper-closeup.jpg  
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