96 V6 3.8 Fuel pressure problems

Thank for the replies. Will check the fuel pressure regulator next.

Just changed fuel pressure regulator, the old one was bad. Still only getting 22psi at idle and when rev up psi drops to zero, let up on gas peddle before stalling out the pressure returns to 22psi. Can not find any gas leaks. Any suggestions. Frustrated and confussed.

how would i check to see if one of the fuel injector o rings is leaking? is there a way to check to see what cylinder it may be?

Still having low fuel pressure. Cleaned MAF sensor and checked fuel injectors. The next step is checking the wiring to the inertia switch, etc. Found an awesome post regarding the wiring in the 5.0 forum. This may be the problem. Prior owner bypassed the inertia switch altogether and just connected wires together with elctrical tape.

Pressure is at 24 at idle and drops to zero when you hit the gas. If we remove return fuel line at the rail and plug it so no fuel can return to fuel tank, pressure remains at 22 psi, shouldn't pressure go way up when you do this? Any other suggestions???

Replaced fuel pump, fuel filter, new battery, new fuel regulator,MAF checked and cleaned.