Thread: 96 GMC Jimmy black smoke, backfires, Timing?
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Old 01-12-2010, 06:21 PM
corhey88 corhey88 is offline
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Re: 96 GMC Jimmy black smoke, backfires, Timing?
i will test the fuel pressure, as soon as i ge ahodof a gauge.. I was wondering if the ECU has not went bad.. I just bought this jimmy, i got it in the condition it is in now, and i had to plug in the top middle plug back in the ECU computer... i wonder if that had anuthing to do with the way its running or possibly damaged the computer running it like that??
Also i think i have a fuel filter that fits the jimmy in the garage.. Would a plugged up filter cause it to run the way it is and backfire??? hard starting??
Oh,, And the engine codes i get are....P0300.. Random Multiple cylinder misfire
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