My Car won't start 95 camaro V6 3.4 automatic

At first we thought it was the fuel pump, but we
changed that and the fuel filter and it still wouldn't
start so we tryed a new PCM and that still didn't
work. The car was getting no fuel pressure to the
rails, Then we jumped the relay switch and it got 45
psi, But still would not crank spark plugs are
getting fire, and injectors are getting pulsing, i
know this by testing the wires for the injectors but
still would not crank. We shot gas through the
intake and it turned over but still would not crank,
We found small round particles in the gas and the
gas was dark yellow but the car has been sitting
for 6 and 1/2 months. I love my car and would love
to fix it, But I'm not sure what else to do!