I NEED A REAL GURU ON THIS ONE!!! 1993 GMC K1500 5.0L Have changed most of the fuel system but still having issues of not wanting to start.
The truck is a standard cab with an 8ft bed and 131" wheel base if that makes any
difference. So here is the scenario: the truck was having issues of starting and then
would start to stall and I would need to feather the gas pedal to keep it running then do
the two foot keeping the idle up and braking at lights to keep it from stalling to get it
home. Did the Seafoam cleaning regimen in the throttle body, ran the motor a bit to clean
it out and then changed plugs, wires, cap, rotor. Started and idled fine but the problem
immediately came back when I went for a drive. Since then have installed new fuel pump,
lines, pressure regulator, injectors, and throttle position sensor. Went for a drive and
seemed to fix the problem. The same day I went back to start the vehicle and the same
problem popped up again. This time it was a full tank of fuel but thankfully the pump had
already been changed and is working properly so that is ruled out. Thinking of it now I am
going to change the gas cap as well as that may be a problem but, beyond anything I
have replaced, what other items parts could be causing this issue?? Give me a
possibilities list in progression and I will eliminate each as I go to zero in on the problem.
It sounds like others have had this issue but I haven't found where there has been a
specific solution. Any help from a true guru would be greatly appreciated!! Thanks!! SK