Thread: Will not start after replcacing fuel rail and injectors

Well, it's a start! (no pun intended). Go ahead and rent or buy that fuel pressure tester and see what the pressure is. If it's just low and below 43, test the fuel pump for voltage and ground at the pump connector, if no pressure, then still test the connector for voltage. That way you can be sure you're actually replacing the issue and not parts swapping for no reason. There's a fuel pump resistor that can cause these symptoms. Just follow the steps

Originally Posted by wstefan20

Well, it's a start! (no pun intended). Go ahead and rent or buy that fuel pressure tester and see what the pressure is. If it's just low and below 43, test the fuel pump for voltage and ground at the pump connector, if no pressure, then still test the connector for voltage. That way you can be sure you're actually replacing the issue and not parts swapping for no reason. There's a fuel pump resistor that can cause these symptoms. Just follow the steps

thats what I plan on doing thankyou

does auto and advanced auto not have fuel pressure gaug loaner tools anymore?

Originally Posted by jetfighterv

does auto and advanced auto not have fuel pressure gaug loaner tools anymore?

Ones out here do. Might have to call ahead to see if they're out on rental

Originally Posted by wstefan20

Ones out here do. Might have to call ahead to see if they're out on rental

yea probably will

okay thanks imma make a list of what ive done to check
check plugs
check plug
test power to injectors
put new old injectors back in then put new ones back after that didnt work
tightern up the icm connector
sprayed starter fluid (started with that)
everytime i take fuel rail off it sprays fuel everywhere so its getting fuel to injectors for sure

Originally Posted by BillBoost37

So for the car to run and toggle the injectors, you need a couple of things.

The PCM needs to see that the car is running. This is done with signals from the coil pack getting back to the PCM. Otherwise the PCM turns off the injectors. The injectors are then toggled on/off via the ground wires that go to them from the PCM. I have also seen a bad maf turn off fuel with the pcm thinking it had no airflow, so no fuel.

There's not much that can do it though. I'm trying to load the up GM manuals to see the diagnostic aid.