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

2.5tdi oil leak around alternator

Discussion in 'A4/A4 cabriolet/S4 forum(B6 chassis)' started by white.akita, Sep 15, 2013.

  1. white.akita
    Offline

    white.akita Member

    Joined:
    May 7, 2008
    Messages:
    280
    Likes Received:
    2
    Hi everyone, yesterday I bought a 2003 a4 2.5tdi quattro with a oil leak that seems to be coming from behind or above the alternator which is covered in oil.
    anyone know where the leak is likely to be coming from ?
    #1
  2. BlackQuat
    Offline

    BlackQuat Well-Known Member

    Joined:
    Nov 24, 2009
    Messages:
    1,791
    Likes Received:
    43
    Probably the rocker covers.
    #2
  3. white.akita
    Offline

    white.akita Member

    Joined:
    May 7, 2008
    Messages:
    280
    Likes Received:
    2
    They look dry as a bone but its hard to see 100%
    #3
  4. white.akita
    Offline

    white.akita Member

    Joined:
    May 7, 2008
    Messages:
    280
    Likes Received:
    2
    Any advice on being able to stop the leak or finding it without taking the front end of the car off ?
    Might try some of that engine stop leak fluid.
    #4
  5. BlackQuat
    Offline

    BlackQuat Well-Known Member

    Joined:
    Nov 24, 2009
    Messages:
    1,791
    Likes Received:
    43
    Nooo don't use that.
    #5
  6. white.akita
    Offline

    white.akita Member

    Joined:
    May 7, 2008
    Messages:
    280
    Likes Received:
    2
    after some more reading it seems it could be the cam seal leaking
    #6
  7. quattrojames
    Online

    quattrojames Moderator Staff Member Moderator

    Joined:
    Mar 28, 2008
    Messages:
    13,885
    Likes Received:
    475
    You mean rocker covers? Mine weeped slightly and the oil went everywhere!
    #7
  8. white.akita
    Offline

    white.akita Member

    Joined:
    May 7, 2008
    Messages:
    280
    Likes Received:
    2
    no, I have read that it could be a camshaft seal when the alternator is covered in oil.
    #8
  9. AlexGSi2000
    Offline

    AlexGSi2000 Well-Known Member

    Joined:
    Feb 14, 2012
    Messages:
    1,191
    Likes Received:
    115
    Yeah, more than likely your cam seal - mines doing the same. :(
    #9
  10. Turkster
    Offline

    Turkster Bro.Paul 2.5TDI Quattro Sport

    Joined:
    Dec 11, 2007
    Messages:
    2,718
    Likes Received:
    29
    why not use the stop oil leak stuff ?
    #10
  11. AlexGSi2000
    Offline

    AlexGSi2000 Well-Known Member

    Joined:
    Feb 14, 2012
    Messages:
    1,191
    Likes Received:
    115
    I would never dream of using it to be honest. From what I have heard it can block small oil channels, clog oil pick-ups.etc
    Which can lead to bigger problems.
    Last edited: Sep 18, 2013
    #11
  12. S4_dan
    Offline

    S4_dan Fire up the Quattro!

    Joined:
    Jan 5, 2006
    Messages:
    1,727
    Likes Received:
    76
    As above, it's great in a cheap old banger but not in a Audi. It can cause blockages. All it does is thicken up the oil and soften the seals. It's not a permanent repair.

    Same with Radweld.....fix the leak properly rather than boding it!
    #12
  13. white.akita
    Offline

    white.akita Member

    Joined:
    May 7, 2008
    Messages:
    280
    Likes Received:
    2
    How would it block ?
    All the ones I have seen are just like water.
    #13
  14. white.akita
    Offline

    white.akita Member

    Joined:
    May 7, 2008
    Messages:
    280
    Likes Received:
    2
    How would it block ?
    All the ones I have seen are just like water.
    #14
  15. AlexGSi2000
    Offline

    AlexGSi2000 Well-Known Member

    Joined:
    Feb 14, 2012
    Messages:
    1,191
    Likes Received:
    115
    Yeah, but when mixed with oil it thickens up.

    There are loads of very small oil channels - especially around the hydraulic lifters, if oil flow is reduced even slightly below spec it can cause accelerated wear.

    As Dan said, its fine for a banger you don't care much about, but modern engines run low tolerances - so even thickening the oil slightly could be devastating.

    My cam oil seal is weeping oil too - as I have exactly the same symptoms - im holding off til the cambelt needs doing again, unless it kills another alternator.
    #15
  16. t3pkd
    Offline

    t3pkd New Member

    Joined:
    Sep 22, 2013
    Messages:
    6
    Likes Received:
    0
    I had a bit of a leak on mine oil everywhere underneath turned out to be oil filter seal leaked into v and went everywhere replaced cleaned no more leak
    #16
  17. wesmaster
    Offline

    wesmaster Member

    Joined:
    Apr 22, 2012
    Messages:
    299
    Likes Received:
    18
    I had the oil filter I ring leak too, new filter and oil change of course, all done!
    #17

Share This Page