GMC C3500 Engine Sputter

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1990 GMC C3500 Spits And Spudders

1990 GMC C3500
I Have A 90 Gmc Dump With A 454 Motor. One Day I Was Driveing And It Started To Spit And Spudder And Back Fire. I Used My Scan Tool And...
1 ANSWER
Asked by 91gmcdump

Knock And Sputter At High Rpm

1985 GMC C3500
I Just Got A Gmc 3500 It Runs Fine At Low Rpms But When I Get In To The Throttle It Starts To Knock Then Sputter. I Adjusted The Valves And...
1 ANSWER
Asked by Mxrider_87

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BackfireBurning OilHard to StartHesitateIdle RoughKnockLow PowerMisfireNot Cranking OverNot RunningOverheatPingRichSputterStall While DrivingStall at IdleSurge

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