406 sedan rocker cover oil leak problem

Discussion in 'Peugeot 406' started by Tel69, Aug 24, 2010.

  1. Tel69

    Tel69 Guest

    My local garage have been VERY good, but this one has them stumped.
    A 406 sedan, the rocker cover did have an oil leak.
    During a recent service and recent clean up I said "fix the oil leak"
    They "fixed" the oil leak.
    It lasted a day, sent it back and more sealent.
    Lasted 2 days.
    Now it's back. Not alot, but still should not be happening.
    There is apparently no gasket for the rocker cover for my 406.

    Any thoughts are appriciated.

    Tel69, Aug 24, 2010
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  2. Tel69

    Bob Minchin Guest

    Easiest way is to cast a silicone gasket in situ.

    Clean the rocker cover sealing face of all oil using petrol or other
    solvent. Put a film of oil on the mating face.
    Use a reputable (e.g. hermatite orange in UK) silicone liquid gasket
    compound and place a layer on the rocker box cover.
    Fit the cover enough to locate it but don't tighten it.
    Allow the gasket to cure.
    Lift off the cover to inspect the surface, filling in any gaps.
    Fit the cover as normal.

    Bob Minchin, Aug 24, 2010
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  3. Tel69

    Tel69 Guest

    Thanks Bob, I'll pass on the info.
    Tel69, Aug 25, 2010
  4. Tel69

    Tinkerer Guest

    Is it possible to see oil trails from the rocker cover or is there a general
    film over the whole area. I ask because I have, over the years, had a
    number of oil leaks in different cars that gave every impression that it
    must be from the rocker box but, in every case, turned out to be the oil
    pressure switch leaking.
    Tinkerer, Aug 28, 2010
  5. Tel69

    Chris Guest

    Even the filler cap can cause a leak not fitting
    Chris, Aug 29, 2010
  6. Thanks for replying tinkerer,

    Well it's going back in for it's third attempt at fixing this. (This
    time with Bobs instructions)
    There is a trail coming from the rocker cover (Between the first and
    second attempt at fixing this the trail moved).
    Before the first attempt it was not easily visbile until the engine
    was steam cleaned,
    Terry Summers, Sep 1, 2010
  7. Thanks Chris,
    The filler cap has been checked and it's sealing properly.
    Terry Summers, Sep 1, 2010
  8. Tel69

    Tinkerer Guest

    Ah, well, If there's a trail then that pretty well clinches it. Good luck,
    let us know how it works out.
    Tinkerer, Sep 1, 2010
  9. Tel69

    Chris Guest

    so its him thats leaveing all the oil on the roads lol lol
    Chris, Sep 1, 2010
  10. I'm trying to stop my own little BP thing from happening. LOL!
    Terry Summers, Sep 2, 2010
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