Fuel Pressure 502mpi will not got above 30psi
 

Ive almost had it.. I have an old style (fresh) 502 VST style MPI Ive changed both fuel pumps, had all my injectors done, new regulator.. basically new fuel system. and still cant get my fuel pressure above 30psi.
(I believe it should be in the 32-34 range) Does anybody have any suggestions I'm about to go crazy with this one..
It almost feels like its a voltage issue. If the pumps are not getting proper volts would the fuel pressure be lower then its supposed to be?? Does this make sense? Ive been working on this for so long I'm starting to loose my clarity....Thanks for any help or suggestions in advance.. MW

Re: Fuel Pressure MPI will not got above 30psi
 

Most definitely if your pump doesn't have full voltage you will not reach proper fuel pressure. You did say you checked your regulator, so that would of been the first place to look. A clogged fuel filter/separator can also cause low pressure.

Re: Fuel Pressure 502mpi will not got above 30psi
 

my 575's are only running between 25-30 and on the spec/test sheet from fountain it shows 25-26..