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    350 mag mpi low fuel pressure.

    Hello everyone. I know here is tons of similar topics ,but i could not find my fix. Ok 1999 350 mag mpi has a steaady 18 psi of fuel pressure at rail engine off (should be around 30 psi). new filter,New pump, replaced fuel pressure regulator twice (OEM, pink mark)no change, pressure goes above...
  2. V

    350 MAG MPI fuel pressure problem

    Hello everyone, I have a question . I have 1999 350 MAG MPI (serial L305046) that I have low fuel pressure problem with. I connected my gage to fuel rail port and with ignition ON engine OFF I am getting 35 PSI and it drops 5 PSI after 1 minute (which per manual #24 sounds right) but when I...
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