If yours is the model with EGR, I'd look to the Valve being slow to react or the passesges getting built up with carbon. Not enought to set a light but enough to make a diffrence. The valve doesnt react instantly; But thats where I'd look.
Only other thing I can think of is the Chain tensioner wearing down combined with chain strech. So at idle its slightly out of time.
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One Bolt at a Time.
Last edited by Blktrax : 10-28-2009 at 12:56 PM.
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