Mechanics

GMC C2500 RPM PROBLEM

1996 GMC C2500 • 103,000 miles

My truck 5.7 Vortec has a slight misfire at 60 MPH and 2000 rpm and steady speed. No codes. No miss under slight speed increase or heavy throttle. Repaced cap and rotor last year, and ran injector cleaner, fixed it. But now it's back, ran injector cleaner again, no fix. Ideas?
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Guest
January 17, 2013.



Have the injectors cleaned by direct injection of the cleaner to the injectors. Additives rarely work, you need full concentrate

Roy

ASEMaster6371
Jan 17, 2013.