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2.5tdi oil leak around alternator

white.akita Sep 15, 2013

  1. white.akita

    white.akita Active Member

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    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 ?
     
  2. AudiLeon

    AudiLeon Well-Known Member VCDS Map User

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    Probably the rocker covers.
     
  3. white.akita

    white.akita Active Member

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    They look dry as a bone but its hard to see 100%
     
  4. white.akita

    white.akita Active Member

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    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.
     
  5. AudiLeon

    AudiLeon Well-Known Member VCDS Map User

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    Nooo don't use that.
     
  6. white.akita

    white.akita Active Member

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    after some more reading it seems it could be the cam seal leaking
     
  7. quattrojames

    quattrojames Moderator Staff Member Moderator Audi A6 Audi Avant Owner Group

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    You mean rocker covers? Mine weeped slightly and the oil went everywhere!
     
  8. white.akita

    white.akita Active Member

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    no, I have read that it could be a camshaft seal when the alternator is covered in oil.
     
  9. AlexGSi2000

    AlexGSi2000 Well-Known Member VCDS Map User

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    Yeah, more than likely your cam seal - mines doing the same. :(
     
  10. Turkster

    Turkster Bro.Paul 2.5TDI Quattro Sport

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    why not use the stop oil leak stuff ?
     
  11. AlexGSi2000

    AlexGSi2000 Well-Known Member VCDS Map User

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    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
  12. S4_dan

    S4_dan Fire up the Quattro! VCDS Map User

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    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!
     
  13. white.akita

    white.akita Active Member

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    How would it block ?
    All the ones I have seen are just like water.
     
  14. white.akita

    white.akita Active Member

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    How would it block ?
    All the ones I have seen are just like water.
     
  15. AlexGSi2000

    AlexGSi2000 Well-Known Member VCDS Map User

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    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.
     
  16. t3pkd

    t3pkd New Member

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    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
     
  17. wesmaster

    wesmaster Member

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    I had the oil filter I ring leak too, new filter and oil change of course, all done!
     

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