I GOT SPARK, but fuel is a different story

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  • Widebody325
    E30 Addict
    • Feb 2004
    • 417

    #1

    I GOT SPARK, but fuel is a different story

    Well, I bought the correct DME unit, and that was defintely fixed the problem. My dme before had EWS or was just bad. SO, I got spark, my injectors are firing, but there is no fuel delivery. I put my head under where the fuel pump is, and when I turn the key I can hear it humm, but no fuel is being pumped. And yes, there is gas in the tank. What else could it be? My sending unit? I think I am going to pull the pump tomorrow and check it out. Im gettin real excited, shes so close to starting.
    Follow me @baysidefabrication on Instagram
  • Jordan
    R3V OG
    • Oct 2003
    • 12907

    #2
    I bet you reversed the fuel lines from the frame rail to the fuel rail.
    Tenured Automotive Service Professional - Avid BMW Enthusiast

    Vapor Honing & E30 ABS Pump Refurbishment Service
    https://mtechniqueabs.com/

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    • 325Projectz
      E30 Mastermind
      • Jan 2005
      • 1956

      #3
      Originally posted by Jordan
      I bet you reversed the fuel lines from the frame rail to the fuel rail.
      .
      91 m3

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      • Widebody325
        E30 Addict
        • Feb 2004
        • 417

        #4
        Originally posted by Jordan
        I bet you reversed the fuel lines from the frame rail to the fuel rail.
        Nope, that was one of the first things I checked, because I have done that before. I disconnected both lines, and checked it out. Nothing out of either of em.
        Follow me @baysidefabrication on Instagram

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        • arsevader
          E30 Enthusiast
          • May 2005
          • 1025

          #5
          Originally posted by Widebody325
          Nope, that was one of the first things I checked, because I have done that before. I disconnected both lines, and checked it out. Nothing out of either of em.
          Then either your pump is bust or you have a blockage. Bad filter?

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          • Widebody325
            E30 Addict
            • Feb 2004
            • 417

            #6
            Yeah, I was thinking that too. But the car ran perfect beforre I pulled the M20 out, and that was in November. Im gonna get a new fuel filter anyways and see whats going on under there.
            Follow me @baysidefabrication on Instagram

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            • Jason89i
              E30 Modder
              • Sep 2004
              • 875

              #7
              Originally posted by Jordan
              I bet you reversed the fuel lines from the frame rail to the fuel rail.
              there are 3 lines. supply, return and evap. double check. did you keep the charcoal canister w/ e36 elec valve? if not, you could have capped the supply line vs the evap line. dont ask me how i know. (the 86 has the filter right where the late models have the canister.....shame on me.) cheers, jason

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              • Jason89i
                E30 Modder
                • Sep 2004
                • 875

                #8
                update?

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                • Widebody325
                  E30 Addict
                  • Feb 2004
                  • 417

                  #9
                  THE MOTOR IS ALIVE. After sorting out some fuel supply issues I got the motor running. Idle's perfect and revs like it should. (And yes open headers sounds really badass) I havent taken the car for a drive yet. I want to make my exhaust system first. I got about 4 more hours of fabricating for the exhaust, then I should be able to take it for a spin. I also still have to get the temp gauge and the tach working. I will post pics this weekend if all goes well.
                  Follow me @baysidefabrication on Instagram

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