24v Swap Experts: help needed on a no-start

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  • hi its me alec
    E30 Addict
    • Apr 2008
    • 478

    #1

    24v Swap Experts: help needed on a no-start

    I'd love to hear a rundown or step-by-step of everything that needs to be done in order to make spark happen on an M50tu swap. It cranks nicely and I'm pretty sure the fuel pump kicks in, so idk. I have one ground connected on the driver's side of the engine, from underneath the bottom-most PS pump mount on the block (the M20 ground strap didn't reach anywhere else without bending/kinking) and one grounding the coils up there somewhere. When I tried to fire it, I had one coil connecting plate missing (didn't think about it.)

    Is there anything to know about the neutral safety switch when deleting the auto tranny? I was thinking that this could be a contributor to a no-start as well.

    Any ideas or help would be much appreciated. I really want to get this bad boy on the road. :D




    So far my list of things to check tomorrow are

    - attach driver's side ground strap to motor mount, instead of underneath PS pump block mount
    - install the 2nd coil connecting plate thing
    - make sure that the fuel pump relay was re-installed in the correct location

    Everything else, I'll probably need some help with. =/ I'd love to be prepared with a to-do list.
    Last edited by hi its me alec; 05-10-2009, 11:24 PM.

    WTB: early e30 sedan front doors
  • e30this
    No R3VLimiter
    • Dec 2007
    • 3580

    #2
    Do you have your ECU grounded? Do you have your fuel lines on the correct lines?
    Is there anything to know about the neutral safety switch when deleting the auto tranny?
    If you removed the trans and you didnt do anything with the wires then this right here is most likely your problem.

    Im looking on how to wire this up so you can change it.

    Comment

    • hi its me alec
      E30 Addict
      • Apr 2008
      • 478

      #3
      Originally posted by e30this
      Do you have your ECU grounded? Do you have your fuel lines on the correct lines?

      If you removed the trans and you didnt do anything with the wires then this right here is most likely your problem.

      Im looking on how to wire this up so you can change it.
      How does the ECU ground? Is it through the OBD port?

      Fuel lines are on correctly.

      Removed which trans? I bought the motor with no transmission or flywheel or clutch. My friend cut out all the unnecessary auto tranny plugs and most of those wires have been deleted.

      WTB: early e30 sedan front doors

      Comment

      • e30this
        No R3VLimiter
        • Dec 2007
        • 3580

        #4

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        • hi its me alec
          E30 Addict
          • Apr 2008
          • 478

          #5
          yay! i'll try that out

          WTB: early e30 sedan front doors

          Comment

          • sharksforthecup
            Wrencher
            • Aug 2007
            • 246

            #6
            disconnect four fuel supply at the manifold and stick the line in a cup. turn the key on for a second or two and see if theres fuel in the cup. that will eliminate the fuel pump. Then obviously make sure you fuel supply is coming up near the crank sensor to make sure you dont have them switched.

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