Thread: 1990 C3500 7.4L TBI backfire
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Old 12-09-2010, 08:10 AM
maxwedge maxwedge is offline
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Re: 1990 C3500 7.4L TBI backfire
Many things can cause this, low fuel pressure, clogged filter weak injector, out of time, and so on, somone has to dig into this onsite for a proper diagnosis.
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