How to properly delete the plastic fuel expansion tank lines?

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  • eight-0-eight
    Noobie
    • Aug 2020
    • 28

    #1

    How to properly delete the plastic fuel expansion tank lines?

    Hi all,

    So I had to replace the thicker braided line that goes from the gas tank to the evap tank in the right rear tire well.

    While doing so, the only way I could get that thicker hose through the conduit was to remove the 2 smaller plastic lines that also connect to the evap tank.
    I've tried so many different ways of trying to fish all 3 through, but it's just not happening (unless anyone has some ideas...) and so I saw some old posts about deleting the evap tank as a whole and connecting the two lines at the top of the gas tank but it wasn't exactly clear to me exactly how and what to block off, vent, etc.

    What I want to achieve is keeping the thicker braided line but delete the smaller plastic lines as I just can't get those fished through so if anyone has suggestions on that, I would appreciate it!


    At the gas tank:
    - Connection to large braided line --> goes to T
    - connection to smaller plastic line --> goes to smaller line on expansion tank
    - connection to larger plastic line --> goes to larger line on expansion tank

    at the expansion tank:
    - connection to smaller plastic line
    - connection to large plastic line
    - connection to T

    at the filler:
    - connection to T (with larger part connecting to braided and smaller connecting to expansion tank)

    What do I cap, loop, vent to get rid of these stupid plastic lines ?

    Last edited by eight-0-eight; Yesterday, 06:41 PM.
  • TobyB
    R3V Elite
    • Oct 2011
    • 5243

    #2
    You can't just e- tape the 3 together and pull them as one?
    Stagger the 2 smaller lines behind the big one by an inch each,
    and wrap the whole thing. Then lube it up with something like
    pulling lube or dish detergent. . .

    One of the nice things about the E30 is that it has a modern evap
    system, and doesn't smell like fuel all the time like a 2002 or E21 does...

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

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    • Panici
      Moderator
      • Dec 2009
      • 2400

      #3
      Might you be referring to my thread from 2019?



      Originally posted by TobyB
      One of the nice things about the E30 is that it has a modern evap
      system, and doesn't smell like fuel all the time like a 2002 or E21 does...
      That is a valid point, and I can confirm that my car does not smell like gas with the above setup.
      I left the charcoal canister and purge valve in place.

      '87 BMW E30 325is Turbo

      '99 BMW E36 M3 - - - '98 BMW E36 328i

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