850 oil leak mystery

Discussion in 'Volvo 850' started by volvo-italiano, Oct 4, 2003.

  1. I have a 95 850 GLT wagon with a mysterious oil leak that the repair
    shop cannot fix. And this is a Volvo/Saab specialist, one of the more
    reputable places in the region.

    We've made four trips to the shop over the past three months. They've
    had the car for a total of five days. Every time they think they have
    the problem solved. The leak goes away for a few days, but then comes
    back. First, they replaced the camshaft position sensor seal. A few
    weeks later, they serviced the PCV system and cleaned the flame trap.
    A few weeks after that they serviced the PCV system again and cleaned
    the throttle body assembly. About a month later, they resealed the
    rear cover plate and the rear of the cylinder head. Then about a month
    after that, they replaced the PCV screen, the PCV nipple, the PCV
    nipple O-ring, the balance shaft seal, and the chemical gasket
    sealant. They also checked the camshaft and everything seems to be OK.
    This last time, the leak went away for about two weeks, but now is
    back again.

    Does anyone have a clue what could be causing this?
    volvo-italiano, Oct 4, 2003
  2. volvo-italiano

    volvowrench Guest

    by volvo-italiano dropped his wrench, scratched
    his head and mumbled,
    Have them clean the oil off again. Add tracer dye to the oil and check
    with black light for the source of the oil trace.

    volvowrench, Oct 5, 2003
  3. volvo-italiano

    Mike F Guest

    I've seen quite a few 850s with the oil trap clogged from infrequent oil
    changes and/or poor quality oil. Because of its design it's impossible
    to clean properly, the only fix is replacement, which involves intake
    manifold removal (long = expensive job).
    Mike F, Oct 6, 2003
Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.