Questions & Answers for: GMC Safari runs rough

Running rich and lean I have a 95 GMC Safari with a 4.3. It's been running rough, seems to be missing. I've replaced the plugs, plug wires, cap, rotor, O2 sensor, and spider injector. Nothing has ...

...runs rough some times after i trun it off it wont do anything no head light no dome light no dash lights no radio wont trun over at all its like thers no battery had battery tested and its good and ...

...rough idle untilit warms up. Then runs fine accept for what appears to be a file or cracked spark plug which is minor compared to how rough it idles at start up. Really smell the gas and exhust until ...

i tune it up and it still runs rough and has no power and smell rich could be to much fuel going through, or could be an air intake pipe

...runs extremely rough & rpm's flunctuate as if it was going to stop kill. Could this be a fuel pump, catalytic converter or vaccuum line issue? Please advise. Do you have a check engine light on? ...

runs rough and stalls again when given gas. possible fuel related or a sensor? maybe your iac valve is not working? it takes place of a choke or temp sender to computer could be bad which controls t I

...RUNS VERY ROUGH IN PARK NOT ABLE TO REV UP, ENGINE BOGGING. 3.FOUND ARCING AT COIL CHANGED NOW WILL NOT START . 4.VEHICLE WAS STARTING WELL PRIOR TO THIS BUT WHEN HOT WOULD NOT START. 5.FUEL PUMP AND ...

...rough idle This is very interment. Starts good and runs good to begin and often after engine warms then rough idle, this is not evident at normal driving speeds. The rough idle is not evident every ...

...runs rough and sometimes stalls, while driving the hotter the engine gets and warms up the worse it runs, until eventually it will run the worst ive ever seen and hardly move with no power. Fuel pump ...

...runs a bit rough at mid throttle positions, and it sounds like detonation in the exhaust at high throttle settings ( sounds like someone is hitting the exhaust manifold on the right side ( I could be ...