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Hissing noise... near fuel tank... no visible leak.

Discussion in 'A3/S3/Sportback (8P Chassis)' started by _G_, Aug 1, 2012.

  1. _G_

    _G_ Active Member

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    Sounds like a snake living on the rear axle...

    Or some kind of pressure being slowly released... open the gas cap with the engine running and the hissing continued...

    Recently replaced N80 valve but P0441 code has returned...

    Its a 2.0T and Im preparing it to sell to my good friend.

    Thank you
     
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  3. gen.heinz guderian

    gen.heinz guderian Well-Known Member
    VCDS Map User

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    Fuel pump?
     
  4. _G_

    _G_ Active Member

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    hmmm all the measuring blocks check out on vcds
    all i can say is the pump never used to make this sound before
    my mates s3 has done this since day 1 and now 39k miles on the original pump..
    what to do what to do...
     

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