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if you connect the fuel pressure gauge to the fuel line from the fuel tank where it goes into the fuel filter what is the fuel pressure ?
if it is only 45 at that line with the gauge put in like i said the issue is in the tank of either the pump not making the PSI or it can not due to a power or ground issue
that takes the regulator out of the mix as being a problem
if you run a new temp GOOD wire from the frame to the big black wire at the fuel pump connector will the psi go up to spec ?
if you disconnect the fuel line off the tank into the fuel filter and directly connect that line into the pressure gauge you are only testing the pump pressure and NOT the return system
if it reads 45 with it connected directly into the line i said it is again a pump issue or the pump can not make the pressure
if you did connect it in to test the way i said then try a new good ground right from the frame to the big black wire at the pump connector and see if you still get 45 or not
how are you making out ?
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