You talk about oil pressure and fuel pressure. Which one? If the oil pressure switch is faulty, it could cause a no start condition. If the on board computer senses low or no oil pressure it will inhibit the engine.
Not as long as the fuel pump relay is functional.
Testimonial: "The fuel pump pressure and elec is ok. The injectors do not spray when you turn the key on and I have been told that they should not. Not sure whick is correct. I did rebuild the tbi on it, which is a 350 chev 5.7. 40 LBs on fueil pump."
Fuel pressure for tbi is around 9--13 psi. 40 psi is way too high. Is the fuel return line clogged up?
I know what you mean about the replys. To reply, I hit the comment button.
The voltage for fuel injector goes hot with the key on. The ground for your fuel injector is controlled by the computer. The computer pulses the ground on and off. Did you check for voltage at fuel injector with key on? If you have good voltage, then check the ground circuit for injector. If no ground, the usual cause is because the computer doesn't see an rpm signal. The rpm signal comes from distributor, maybe pickup coil or ignition module. There could be other issues?
I thought I would let all of the guys that offered me advice as to what I found on my 94 Chev. k1500 with a no start. It would just turnover and quit. Long and short of it is the catalytic converter is plugged. So Thanks to each of you who offered advice.
×
523 views
Usually answered in minutes!
Jack I should have said fuel pressure was 14 and not 40 sorry for the mistake, but I am having a Hell of a time on this site trying to answer the replys.
Gentlemen Thank You for the help but I found the reason for the no start and it was the Catalytic Converter is plugged. I drilled a hole in each side of the cat, and it started right away. I would have taken out the o2 sensor ahead of the cat but it just was not coming out without creating some major problems. Yesterday I posted that I had gotten figured out but not sure if it got posted. Again, Thanks to all who help.
×