Need help m50 NV 92, crank no start

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  • Matt-B
    The Waffler
    • Jun 2009
    • 3856

    #1

    Need help m50 NV 92, crank no start

    Motor is cranking and not starting

    I have fuel to the front of the rail, the spark is mad crazy, so I think my injectors are not opening?
    I cleaned ground at end of rail and reinstalled, popped 1 time, then nothing.
    Jumping it from another car, did nothing, so tomorrow Im going to swap ECU's and MAF...

    ECU was from a running car, but MAF, I am not sure....

    opinions, thoughts, questions?

    thanks

    ps: Im also going to switch cam, and crank plugs...would things like ECU, MAF, and Crank Sensor, make injectors not open?


    Please leave feedback below, thanks

    http://www.r3vlimited.com/board/showthread.php?t=358170
  • ahriley91
    E30 Addict
    • Jan 2010
    • 451

    #2
    Before you go buy some more parts, try switching the fuel lines. If might not work, but it's worth a shot.


    http://www.r3vlimited.com/board/showthread.php?t=162444

    Comment

    • Matt-B
      The Waffler
      • Jun 2009
      • 3856

      #3
      front fuel line, i popped off, into bottle, filled bottle, its the right line


      Please leave feedback below, thanks

      http://www.r3vlimited.com/board/showthread.php?t=358170

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      • Farbin Kaiber
        Lil' Puppet
        • Jul 2007
        • 29502

        #4
        It will run like shit with a bad MAF. That means it will run.

        Take off an injector connector, grab two pieces of wire and a flashlight bulb, make a ghetto test light and see if the injectors are getting pulse.

        Comment

        • Matt-B
          The Waffler
          • Jun 2009
          • 3856

          #5
          doing that tomorrow yea, thanks Farbin


          Please leave feedback below, thanks

          http://www.r3vlimited.com/board/showthread.php?t=358170

          Comment

          • e30s50dan
            R3VLimited
            • Nov 2008
            • 2076

            #6
            Spray a little starting fluid in the intake...behind the maf. If it try's to start,chase the fuel issues
            NASA
            BMWCCA member
            PCA member 25yrs




            1991 318IS slick top
            1997 M3 sedan
            2001 325CI DD

            “whoever turns the wheel the least, wins"

            Comment

            • dirty30
              No R3VLimiter
              • Jul 2004
              • 3005

              #7
              is your dme grounded?

              are your cam and crank sensors on the wrong engine harness plugs?

              Comment

              • Matt-B
                The Waffler
                • Jun 2009
                • 3856

                #8
                I heard, the DME does not need a ground, its grounded through harness, and Ill switch CAM and CRANK here shortly


                Please leave feedback below, thanks

                http://www.r3vlimited.com/board/showthread.php?t=358170

                Comment

                • Farbin Kaiber
                  Lil' Puppet
                  • Jul 2007
                  • 29502

                  #9
                  lol.

                  Comment

                  • Matt-B
                    The Waffler
                    • Jun 2009
                    • 3856

                    #10
                    put a ground on DME to strut tower, going to make a better ground here shorty, didnt not make a difference, going to buy a fuel pressure gauge soon

                    FML, why cant a swap go off with out a hitch, everything is from a running car


                    Please leave feedback below, thanks

                    http://www.r3vlimited.com/board/showthread.php?t=358170

                    Comment

                    • Jand3rson
                      Banned
                      • Oct 2003
                      • 37587

                      #11
                      Originally posted by Matt-B
                      put a ground on DME to strut tower, going to make a better ground here shorty, didnt not make a difference, going to buy a fuel pressure gauge soon

                      FML, why cant a swap go off with out a hitch, everything is from a running car
                      It doesn't matter if it's from a running car. You've got something hooked up wrong/backwards/not at all somewhere. Just have to find it.

                      Comment

                      • samiam3356
                        E30 Mastermind
                        • Jul 2009
                        • 1901

                        #12
                        Resistance on the cps should be in the low 500's. Check that. Large vac leak?dme is grounded on the shock tower btw.

                        Originally posted by Roysneon
                        $5 shipped?
                        Originally posted by MarkD
                        You are a strange dude, I'n not answering any more posts from you.

                        Comment

                        • Matt-B
                          The Waffler
                          • Jun 2009
                          • 3856

                          #13
                          it was ground down below by motor ground, i can ground on strut tower, its wanting to start, new plugs, getting spark, getting fuel, going to test fuel pressure here shortly...


                          if my FP, is not high enough, could that be a FPR or pump? pump is about a year old, FPR was on running car when motor came out
                          Last edited by Matt-B; 04-22-2011, 04:59 PM.


                          Please leave feedback below, thanks

                          http://www.r3vlimited.com/board/showthread.php?t=358170

                          Comment

                          • Farbin Kaiber
                            Lil' Puppet
                            • Jul 2007
                            • 29502

                            #14
                            I don't think it's the pump. Or the FPR. I think something is still plugged in the wrong connector. Check the Wiring Diagram for the harness you have, and make sure each connector is where it's supposed to be. There are only a few you could mess up.

                            Comment

                            • e30s52
                              R3V Elite
                              • Oct 2007
                              • 5235

                              #15
                              Have you checked the CPS yet?

                              www.gutenparts.com
                              One stop shopping for NEW, USED and EURO PARTS!

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