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Interesting Oil Leak - Any Ideas? 850 1996

posted by  VolvoBug on  Fri Jan 29 03:42 CST 2010
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last visit: Sun Dec 16 11:17 CST 2012
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High Res Pictures (link below) of my 1996 Volvo 850 Turbo Sedan with 117,000 miles on it. I have noticed some interesting oil leaks around my engine. I don't understand how the oil can be coming from the top of the engine. I have gotten underneath the car and checked the turbo return seal (read it fails alot - IPD has a kit for it) but it doesn't seem to be leaking from there. Any information or knoweldge about this would be greatly appreciated. HIGH RES PICTURES HERE: http://volvobug.com/850leak.aspx
--
1989 240DL B230F w/ 223k miles. Stock, except for some Virgo's and my stereo.








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    Interesting Oil Leak - Any Ideas? 850 1996

    posted by  lpsage on  Fri Jan 29 18:01 CST 2010
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    last visit: Sat May 24 04:57 CST 2014
    [RELATED]

    Have you checked the distributor cam seal?








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      Interesting Oil Leak - Any Ideas? 850 1996

      posted by  VolvoBug on  Sat Jan 30 11:29 CST 2010
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      last visit: Sun Dec 16 11:17 CST 2012
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      Have not checked that, wasn't aware there was a seal under the distributor. Thanks for the info. Can the leaks underneath be the turbo oil line?
      --
      1989 240DL B230F w/ 223k miles. Stock, except for some Virgo's and my stereo.








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        Interesting Oil Leak - Any Ideas? 850 1996

        posted by  jablackburn on  Sat Jan 30 19:52 CST 2010
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        last visit: Thu Jan 20 10:56 CST 2011
        [RELATED]

        The turbo return line is a hard one to isolate, as it usually covers EVERYTHING near the turbo area in oil. However, if that line is not completely dry, it probably is indeed leaking.

        Photobucket is being a pain at the moment, but check out the pictures in this post:

        Turbo question

        I believe mine is the 5th one down.








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    Interesting Oil Leak - Any Ideas? 850 1996

    posted by  KlausC on  Fri Jan 29 04:45 CST 2010
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    last visit: Fri Oct 24 10:15 CST 2014
    [RELATED]

    There appears to be more than 1 leak. Is the bottom air guide/splash guard still installed? Without it, the intercooler weep hole can blow oil on the passenger side of the engine while you have the turbo engaged.

    Check the exhaust cam on the driver's side, see if any oil is leaking from there. Even a little bit can be a lot after a few weeks. It also says that the crankcase pressure is too high, which means clean off the PCT nipple and start thinking about replacing the oil speparator and lines.

    The leak on top of the engine is most likely the oil filler gasket, but, as mentioned already, don't replace it until you know the crankcase pressure is proper.

    Klaus
    --
    Proud owner of a 220S. If I had more room, I would have more Volvos.








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    Interesting Oil Leak - Any Ideas? 850 1996

    posted by  jablackburn on  Fri Jan 29 04:19 CST 2010
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    last visit: Thu Jan 20 10:56 CST 2011
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    Take the Volvo spark plug cover thing off and have a look around there. If it's covered in oil, you probably need a new oil filler cap gasket. Oil will leak out of there and run down the sides of the engine.

    Before you do that though, do you have excess pressure in the PCV system? Pull out the oil dipstick once the car is warmed up and see if you're getting smoke puffing out. If you do, don't replace that gasket until you have a chance to clean the system.








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      Interesting Oil Leak - Any Ideas? 850 1996

      posted by  VolvoBug on  Fri Jan 29 04:31 CST 2010
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      last visit: Sun Dec 16 11:17 CST 2012
      [RELATED]

      About 2 months ago, I completely replaced the entire PCV system (kit from FCP Groton) including completely cleaning out the PTC sensor that is attached to the accordion air intake hose after the air filter box. I have also replaced that oil cap seal with one purchased straight from a Volvo dealer here in CT. Theoretically I should have no more PCV pressure built up I would hope?
      --
      1989 240DL B230F w/ 223k miles. Stock, except for some Virgo's and my stereo.








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        Interesting Oil Leak - Any Ideas? 850 1996

        posted by  VolvoBug on  Fri Jan 29 09:04 CST 2010
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        last visit: Sun Dec 16 11:17 CST 2012
        [RELATED]

        Yes the lower air guide/ splash guard is still in place and the well filled up. I cleaned it out the last time I was under there. PTC is completely cleaned out when I replaced the entire PCV system 2 months ago.
        --
        1989 240DL B230F w/ 223k miles. Stock, except for some Virgo's and my stereo.







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