Couple days ago, I took of a zex wet kit off my 94 Z28. Before I took it off, it started fine everytime I turned the key but now I'm not getting any fuel pressure at all. I replaced the shrader valve and fuel filter, still nothing. Will crank, just won't start. When I turn the key on (engine off) I can hear the fuel pump prime, but it still reads no pressure. After cranking for a bit, the most pressure I'll get is maybe 10 psi. Any suggestions?

 

Try running the pump on the prime connector under the hood, to bypass security and PCM interlocks, and the fuel pump relay. While powering the pump from the prime connector, verify that you have adequate voltage at the fuel pump connector at the rear axle.

http://shbox.com/1/fuel_pump_prime.jpg

http://shbox.com/1/fuel_pump_wiring.jpg