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Re: 03 Duramax Smokes at Idle
Posted to HD/Fleet Forum on 1/4/2013 1 Reply

I did a wet compression test on the side that was lower, and they did come up some, but not to equal the other side. I also checked the valve lash and there were a couple on each side that were a little tight. I guess the cyliinders are just weak on the right ... Login to read more.

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