Hi everyone.
I have a 01 zr2 4.3w blazer.
I quit on me a couple of weeks ago.
Wouldn't fire. I'm a bit closer now, but won't run.
What I've done so far as to replacing stuff.
fuel filter
Crank sensor
Cam sensorFuel pump relay
Plugs, wires
Cap, rotor
TPSIAC
PCM
Fuel pressure regulator.
After all this. It will act like it wants to start, but it will not run. I can dump gas down throttle body and will run until that fuel is depleted.
I would be most grateful for any and all ideas.
Thanks in advance

 

I didn't see any mention of testing the fuel pressure at the test point. Have you done this? If you have no pressure there, it could be the pump or filter. If pressure is good and you have apparently replaced the fuel pressure regulator, I would look into possibly a bad or dirty injector.

 

Yes. Pressure is around 60psi.
I did take injectors out of the block when I replaced the regulator. I am now thinking of my possible error. When I put them back into the block. I just put them in not thinking about the position of the terminals for the harness. Does this matter as far as powering the injectors ie: +/-.
Thanks for the reply

 

No obvious gas smell? Sure sounds like a bad fuel pump.