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What does this suction thing in fuel compartment do?

Discussion in 'A3/S3/Sportback (8P Chassis)' started by KhalifaA3, Jul 5, 2012.

  1. KhalifaA3

    KhalifaA3 Member

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    Right... So was washing my car, and thought let me get the dirt out of the fuel thingy?! ...
    [​IMG]

    Then thought hey let me get a bit of water down there 2! To then find all the water getting sucked! By this!!


    [​IMG]

    So.... My question is... What is that? And where is the water gone that it sucked?
     
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  3. mjr901

    mjr901 Parts Manager - (Main Dealer)
    Gold Supporter Audi S3 Audi Main Dealer

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    as far as I'm aware its just a pipe that will feed any water away or fuel that's come over the edge when you've brimmed it.

    just feeds it straight to the floor.
     
  4. cjsuk

    cjsuk Active Member

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    Not a clue but logic would say a drain to stop water /diesel sitting there and prob makes its way back to the floor
     
  5. RallyX

    RallyX Flat Out
    VCDS Map User

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    It is a soakaway for fuel and water.Occasionally gets blocked with daily grime. Stick a pipe cleaner down it to clean. When you pour water down it it should exit by the rear inner wheel arch.
     
  6. Rob2k68

    Rob2k68 Well-Known Member
    Team Daytona Audi S3 DSG

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    Absolutely - its a drain tube.
     
  7. Graham89

    Graham89 Derv Perv

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    If you stick your head under the rear bumper and look up towards the fuel flap you'll see a thin black tube. It's that :) a drain.
     

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