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1988 740 TIC blowing dipstick out 700

posted by  the real huey on  Wed May 11 12:51 CST 2005
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this is an intermittent problem.


Occasionally when driving, i'll see a puff of white smoke (oil) out of the tailpipe, and every once in a while the dipstick is 3-4 inches out of its perch, and oil everywhere under the hood (the two go hand in hand)

Funny thing, the turbo is great both it and the engine are newer (70k well maintained hwy miles) and seems to only occur occasionally.

I'm positive its not the turbo, (the intake hoses are relatively clean) I know the engine is good, compression is 130 or higher on every cylinder, and the car has been babied and used only for maryland to buffalo hwy runs till this year.


Changed oil, it can go a few days with no symptoms, then out of the blue it's spraying oil out of the dipstick. (and tailpipe) just did it again today and then stopped and ran 110 miles no problems.

I had a similar problem on my other 740 wagon, but it went away when i changed the oil.

PCV-flame trap? anyone else experience this problem? i'm fairly sure it's nothing major but have no clue where to start.

Huey








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    1988 740 TIC blowing dipstick out 700

    posted by  rstarkie on  Wed May 11 14:04 CST 2005
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    last visit: Fri Oct 24 10:14 CST 2014
    [RELATED]

    I had the same problem on a 1990 740 GL and once I verified that the plumbing was not plugged up I simply changed the Oring on the dipstick and the problem was cured.

    Randy








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    1988 740 TIC blowing dipstick out 700

    posted by  Big Harry on  Wed May 11 13:22 CST 2005
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    last visit: Sun Sep 21 11:06 CST 2014
    [RELATED]

    It sounds like it could be a stuck oil control ring or scrapper ring.A little Marvel Mystery oil in the top of the cylinder overnight will sometimes work wonders on stuck rings.

    However, the oil separator might need cleaning. Two bolts hold it in and then it is a very tight sqeeze to work it out. Soak it in a little kerosene over night, then clean it with a good degreaser. You may have to use a drill bit to open up the tubes if the carbon is built up.

    Also check the vacuum ports on the intake along with all of the vacuum lines. They get clogged too.

    Regards,
    --
    Will Dallas, www.willdallas.us, www.willdallas.org, www.willdallas.com 86 245 DL 205K miles, 93 940 250K miles, 88 765 GLE 149K miles, 87 745 , 86 244 DL 200K Miles, 88 744T 200K miles







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