1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

A4 Avant small coolant leak

Discussion in 'Audi S4/A4/A4 Cab (B7 Chassis)' started by tomyoud, Jan 9, 2014.

  1. tomyoud
    Offline

    tomyoud New Member

    Joined:
    Dec 17, 2013
    Messages:
    11
    Likes Received:
    2
    Hi Guys, I was wondering if someone could help me out here. I've just bought a 2008 1.9 TDi A4 Avant s-line. I have noticed that there is a very small leak around the thermostat housing area.

    View attachment 25520

    It's this metal pipe (second picture arrowed) I think which goes into where the thermostat goes and then into the heating matrix for the inside of the car. I can feel it's a little damp under the pipe and there is a small ledge for it to drip onto so there is a small amount on there.
    Can anyone shed some light on this for me to fix/how much it would cost from a dealer to fix?

    I don't think it's very serious at the moment because when I unscrew the expansion tank it has got lots of pressure.

    Many thanks
    Tom
    Last edited: Jan 9, 2014
    #1
  2. NHN
    Offline

    NHN Modmetractor

    Joined:
    Jan 14, 2008
    Messages:
    27,235
    Likes Received:
    1,220
    I reckon a new o-ring would possibly fix this unless the pipes been damaged, if the stats been changed its possible o-ring was fitted badly, it would need removing ideally to inspect & resolve, having a spare new o-ring to fit.
    #2
  3. tomyoud
    Offline

    tomyoud New Member

    Joined:
    Dec 17, 2013
    Messages:
    11
    Likes Received:
    2
    It doesn't look damaged....it's just a metal pipe. Do you know if you can just order a single o-ring for it?
    #3
  4. NHN
    Offline

    NHN Modmetractor

    Joined:
    Jan 14, 2008
    Messages:
    27,235
    Likes Received:
    1,220
    Yes you can.
    #4

Share This Page