fuel check valve?

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  • BavBeater85
    Advanced Member
    • Mar 2012
    • 143

    #1

    fuel check valve?

    I recently deleted my inline fuel pump on my early model e30 and replaced the in tank pump with deatschwerks 255...well I seem to have inadvertently deleted this check valve? what affect would that have on the fuel system?
    may you rest in peace, or pieces, whichever comes first

  • TobyB
    R3V Elite
    • Oct 2011
    • 5184

    #2
    Probably nothing with an in- tank pump...

    t
    now, sometimes I just mess with people. It's more entertaining that way. george graves

    Comment

    • nando
      Moderator
      • Nov 2003
      • 34834

      #3
      it's built into the in-tank pump.

      you will have harder starts, mostly.
      Build thread

      Bimmerlabs

      Comment

      • BavBeater85
        Advanced Member
        • Mar 2012
        • 143

        #4
        wild, because I do have hard starts when cold sometimes
        may you rest in peace, or pieces, whichever comes first

        Comment

        • jlevie
          R3V OG
          • Nov 2006
          • 13530

          #5
          If the pump is working properly the fuel rail will reach normal pressure within a few turns of engine even if the rail starts with no pressure. A weak pump (probably not applicable here), an obstruction in the fuel lines, or a bad FPR could result in a delay in getting normal rail pressure. A rail fuel pressure will tell how quickly rail pressure comes up.

          Most commonly hard starts are from intake leaks.
          The car makes it possible, but the driver makes it happen.
          Jim Levie, Huntsville, AL

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