piston misfire =bad spark plug IAC valve is one part
Fuel injection spider unit if it's mpi. Fuel pressure regulator and relief valve also.
Of if it's Sefi. Sorry as the intake has to come off but sometimes you can take throttle body off and look on hole using a mirror while they turn key to on/not run position and see if the pressure valve on the spider unit is leaking fuel. That is a bad thing.
95 Chevy needs some help checked for air leaks put in new fuel filter still idles rough any ideas
1995 Chevrolet C/K 2500 Silverado LB 4WD
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Maintenance & Repair
1990 chevy 2500 5.7 occasional hesitation/drop in RPM's after warming up. I did cap and rotor, plugs and wires along with the TPS. i also checked timing. any other ideas?
1990 Chevrolet C/K 2500 Silverado LB 4WD
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Maintenance & Repair
Ok...so for the last month my truck has been starting hard. Mechanic said it sounded like fuel pressure regulator and I didn't have time so I had him put it in. Ran better for a couple of days and ...
1996 Chevrolet C/K 2500
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Maintenance & Repair
She sat for two years before I bought it. I've replaced the fuel filter, air filter, oil change and oil filter, spark plugs, and battery. When going in reverse, if you put very little pressure on ...
1990 Chevrolet C/K 2500 Silverado Extended Cab LB 4WD
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Maintenance & Repair
So today I was driving my truck (1993 chevy single cab long bed 2500 with a 454), and it was running fine. All of a sudden, after I stopped and turned at a stop light, my truck lost all power. I me...
1993 Chevrolet C/K 2500 Silverado LB 4WD
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Maintenance & Repair
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