Help! Fuel Pressure

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  • euroe30
    Member
    • Dec 2006
    • 65
    #1

    Help! Fuel Pressure

    Hi! Besides the pump and the pressure regulator, what eslse can cause bad fuel pressure?
    Tags: None
    • NC325iC
      R3V OG
      • Mar 2004
      • 6565
      #2
      leaks/bad lines
      Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.

      Originally posted by TimKninja
      Im more afraid of this thread turning into one of those classic R3v moments, where Pizza gets delivered.

        Comment

        • backtrail69
          R3V Elite
          • Jul 2005
          • 4471
          #3
          Clogged Fuel Filter
          :: PNW Crew ::
          '87 325 4dr, '74 2002

            Comment

            • jlevie
              R3V OG
              • Nov 2006
              • 13530
              #4
              Enough crud in the tank to plug the inlet screen, collapsed hoses, plugged filter.
              The car makes it possible, but the driver makes it happen.
              Jim Levie, Huntsville, AL

                Comment

                • jht3
                  Wrencher
                  • Feb 2004
                  • 288
                  #5
                  clogged fuel tank vent/evap system
                  James
                  '88 M3

                    Comment

                    • euroe30
                      Member
                      • Dec 2006
                      • 65
                      #6
                      thanks. I changed the fuel filter and disconnected the pressure regulator and replaced the pump. as soon as i rev it up, it drops a lot. its low at idle already. the lines dont leak. it only loses pressure when its warm

                        Comment

                        • jlevie
                          R3V OG
                          • Nov 2006
                          • 13530
                          #7
                          That sounds like a weak high pressure pump or failure of the in-tank transfer pump.
                          The car makes it possible, but the driver makes it happen.
                          Jim Levie, Huntsville, AL

                            Comment

                            • euroe30
                              Member
                              • Dec 2006
                              • 65
                              #8
                              i dont have an in tank pump. its a euro spec 323i. i just bought a new fuel pump and am going to throw it in wednesday. we'll see how she runs

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