cp3? hard start? white smoke? - TheDieselGarage.com
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post #1 of 2 (permalink) Old 11-16-2011, 01:39 AM Thread Starter
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cp3? hard start? white smoke?

2002 gmc that wont start with out a little WD. idles rough with white smoke all the way through the rpms loaded and not. rebuilt the filter housing and now it flows a solid stream of fuel without any air bubbles. but no fuel in the oil.
Has anyone ever heard of a injection pump going out? if so what are some things to check to tell? would a pressured lift pump help? are the injectors bad?
could it be low compression?
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post #2 of 2 (permalink) Old 11-16-2011, 04:35 AM
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white smoke and bad idle and rough running sounds like Injectors to me, Get the balance rates checked out

+-4mm3 in park idling and +-6mm3 in gear idling are within spec, anything higher or lower are bad injectors

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