[FCPorto]

Thanks for the reply....at key on only the reading is approximately 51 psi. But after fuel pump priming is complete, the pressure drops to about 5-10psi within about 4s. On startup, the fuel pressure runs about 43 psi with the FPR connected to the vacuum line, with the vacuum line off, fuel pressure jumps to about 51 psi. At this point, I've deducted that I have either a faulty fuel pump (I've done the fuel resistor bypass method by bending one of the pins on the fuel pump speed control relay), a leaking injector (haven't done a resistance check), or a faulty FPR. Any help on this would be much appreciated and all help provided thus far is very much appreciated. I'm boggled by this one. Thanks again.