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Re: 99 Isuzu NPR smoke during cold start
Posted to HD/Fleet Forum on 12/19/2008 1 Reply

We have about 40 of these trucks and that is a common problem. What engine does this truck have? Is it the 4HE1? How many miles are on it?

If it is then I can say there are 2 things it could be. The valve seats go bad and actually start to push the valves in... Login to read more.

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