I've replaced everything from fuel pump to fuel filter, relay coil, ignition module, cap and rotor. will not start. have spark but low fuel pressure, pump is the 2nd brand new one.
only getting 10lbs of fuel pressure. Been chasing my tail for 2 plus weeks. It's the 5.7 vortec.
Does the fuel pump run, when you turn the key to the on position? Can you hear the fuel pump? Your spider injection assembly probably is leaking and would need to be replaced. This is a common problem with those year Vortec engines. The new spider injection assembly has ben upgraded.
Yep that or the fuel pressure regulator is stuck in bypass.