Hi everyone,
I have a 1991 S-10 4x4 4.3 tbi, got this truck from my father it sat for 3 years with fuel in the tank, when started idle is good at first then it will idle down and sputter then come back up. levels out after a few minutes but still is rough, when driving at crusing speed surges or lopes, also at times will act like it has no fuel. but at times runs great.
Parts and things I have checked or replaced
fuel tank
sending unit
pump
filters
injectors
fuel metering valve at throttle body
rotor cap, rotor, plugs and wires
I am out of ideas any help would be greatly appreciated
Thanks