91 318is--M50 swap

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  • Stu Mc
    R3V Elite
    • Oct 2003
    • 4083
    #1

    91 318is--M50 swap

    My car is a '91 318is, it has an M50 swap, '95 M3 automatic wiring harness, 413 ECU.

    I drove the car to UPS this morning, no issues whatsoever.
    The car sat in the carport for a few hours, then I went to drive to the post office. First start...cranked, fired...hovered around 400rpm--quit. Next few tries it would crank over but no fire. Fuel pressure is zero during cranking, according to adjustable FPR.

    I swapped the fuel pump relay with another relay, still no fuel pressure.
    I checked all fuses related to fuel delivery, all are fine.

    This is my only car and need it daily for work, errands, etc.

    Any input is appreciated.
    Tags: None
    • MR 325
      Moderator
      • Oct 2003
      • 37828
      #2
      Fuel pump maybe?
      BimmerHeads
      Classic BMW Specialists
      Grover Beach, CA
      www.BimmerHeads.com

        Comment

        • aaron_silva
          E30 Mastermind
          • Oct 2003
          • 1785
          #3
          Originally posted by MR 325
          Fuel pump maybe?
          While cranking the engine, try tapping on the top of the fuel pump on the electrical connector (simotaneously). When my pump was going bad, that is how I started my car.

          Good luck. Let me know if it works for you.

          Aaron

            Comment

            • e30Matt
              R3V Elite
              • Dec 2003
              • 5077
              #4
              Fuel pump or maybe clogged fuel filter?

              "See, we're adding a little something to this month's sales contest. As you all know, first prize is a Cadillac Eldorado. Anyone wanna see second prize? Second prize is a set of steak knives. Third prize is you're fired."

                Comment

                • kowalski
                  E30 Mastermind
                  • Jan 2005
                  • 1791
                  #5
                  also could be a leak or kink in one of the lines if you took the tank out for some strange reason... but a leak will do it too... maybe the regulator is defective...? i duno if that every happens tho

                    Comment

                    • Brew
                      No R3VLimiter
                      • Oct 2003
                      • 3060
                      #6
                      I'd check the fuel pump first, give it a few taps.
                      '91 318is
                      sigpic

                        Comment

                        • AdamF 88iS
                          R3VLimited
                          • Oct 2003
                          • 2051
                          #7
                          Fuel pump.
                          Adam Fogg- '88 M3

                          Common sense- It's the new 'gifted'

                            Comment

                            • Pedro
                              E30 Modder
                              • Oct 2003
                              • 965
                              #8
                              my car did the same shit, then would start whenever it felt like it. it was the fuel pump.

                              http://www.volkswagenjettacup.com/

                                Comment

                                • Stu Mc
                                  R3V Elite
                                  • Oct 2003
                                  • 4083
                                  #9
                                  Was able to just now get a fuel pump from SSF, had it shipped Next Day. Installation was easy with just a few tools, and the car runs really strong right now.

                                  Thanks to all for the advice.

                                    Comment

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