94 GMC Sierra not running right, need help
#1
94 GMC Sierra not running right, need help
I cant figure out whats wrong with my truck, I have to pump gas to start it, sometimes it idles bad, it spudders while driving, hesitates and rpms drop when i punch the gas stalls out when stoped, seems to be worse the colder it is outside. Ive changed fuel filter, spark plugs and wires, distributer cap and roter. any ideas I dont know what to do next.
#2
Check for a vacuum leak at the base of your throttle body by spraying carburetor cleaner around the base. If the RPM changes when you spray the cleaner there, then you've got yourself a vacuum leak!
Have you checked your fuel pressure?
Have you checked your fuel pressure?
#8
It must be a fuel supply issue... If it won't start unless you pump the throttle? And it runs good periodically.... This could be a sign the fuel pump is on it's way out, or the fuel pickup is beginning to plug with slug or rust.
There is possibly a fuel filter under your truck on the frame rail and a smaller one at the throttle body.
Another possibility is the two injectors are beginning to clog
There is possibly a fuel filter under your truck on the frame rail and a smaller one at the throttle body.
Another possibility is the two injectors are beginning to clog