make sure you have GM crank and cam sensors. We have had issues with the cheap ones. Do you have the correct MAF? have you tried unhooking it and trying to start it in speed density mode?

My notes are jumbled and its hard to read so I found a picture.

Pink ignition power
XX PCM driver cylinder specific.
Tan
Black ground


XX=
Purple front or 1st cylinder
LT Blue 2nd cylinder
Green 3rd cylinder
Red 4th cylinder

I verified it with the other side. Its the same.

Awesome thank you.

So it seems like it's a fuel issue. If I spray starter fluid it will fire. Thinking the corvette style fuel regulator might be the problem. Can I just run the pump right too the rails?

Oh, did you fall for the feed line and return line trick? Outer port is the pressure feed and the center port is the return. Check that first.

Depends on what your full pressure is on that pump. 60 psi yes. 100 psi no.

I had it right sounded like it starved for fuel then switched it no pressure. Gotta switch it back. I mean the injectors are good. I need to test the pressure

It's not the crank sensor, it will not even try to fire if the crank sensor signal is missing. If your tach is showing any rpm when your turning it over the crank sensor is fine. It will do exactly what your describing if the cam sensor or circuit is bad though and it will likely even start if you keep cranking it with a bad cam sensor. I would verify the fuel pressure before I went any further.

No, it needs to be regulated, will cause too much pressure and an o-ring could fail....

T,

Is this a GM Performance harness or take out that has been reworked?

I would recheck the pressure reg installation. Outer port feed from fuel pump center opposite to fuel rail. Also make sure you have the lines hooked up correctly to the fuel pump.

What tank and pump set up ar you using.

The Harness was made by PSI