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Thread: What would cause...

  1. #1
    Join Date
    Sep 2006
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    Erie, PA
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    65

    Default What would cause...

    ...oil to smoke from the oil cap when removed when the car is running?

    Thanks

    Nate

    Black 1995 525i 100K Mi
    Nat1

  2. #2
    Join Date
    May 2006
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    NH
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    Default

    How much smoke and what grade oil? I opened mine today when i got the Engine Oil level low warning. I had 5w30 put in a few weeks ago thinking it'd be getting colder sooner and we had temps up in the 80's the last few days. When i opened my oil fill sure a little smoke was visible , how else could the oil disappear without a leak if it didn't burn up from heat?
    1995 540i Manual build 1/95

  3. #3
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    Sep 2006
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    Erie, PA
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    Quote Originally Posted by Jehu
    How much smoke and what grade oil? I opened mine today when i got the Engine Oil level low warning. I had 5w30 put in a few weeks ago thinking it'd be getting colder sooner and we had temps up in the 80's the last few days. When i opened my oil fill sure a little smoke was visible , how else could the oil disappear without a leak if it didn't burn up from heat?
    Quite a bit of smoke, I know I have an oil leak and smoke is coming from the backside of the engine as oil drips onto the manifold, I think. I have changed the valve gasket (checked it AGAIN for the 3rd time today, reseated and retightened)

    Black 1995 525i 100K Mi
    Nat1

  4. #4
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    Sep 2006
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    Erie, PA
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    Default

    Quote Originally Posted by Jehu
    How much smoke and what grade oil? I opened mine today when i got the Engine Oil level low warning. I had 5w30 put in a few weeks ago thinking it'd be getting colder sooner and we had temps up in the 80's the last few days. When i opened my oil fill sure a little smoke was visible , how else could the oil disappear without a leak if it didn't burn up from heat?
    sorry..forgot about the grade of oil; don't know what crap the previous owner was putting in it for 10 years (I've only had it 1 month) but I just changed the oil and filter with mobile 1 oil.....still smoking.

    Black 1995 525i 100K Mi
    Nat1

  5. #5
    Join Date
    Sep 2006
    Location
    Erie, PA
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    Default

    Quote Originally Posted by nmwaldron
    sorry..forgot about the grade of oil; don't know what crap the previous owner was putting in it for 10 years (I've only had it 1 month) but I just changed the oil and filter with mobile 1 oil.....still smoking.
    lol...i'll get there in the end, it's mobile 1 10w30..(little slow this evening)

    Black 1995 525i 100K Mi
    Nat1

  6. #6
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    May 2006
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    NH
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    Default

    Have you looked at your collant reseviour? How's that fluid look,have you measured at what rate you're losing oil?Didn't you post those pics of your valve train with the valve covers off all caked with burnt oil sludge? If that was you wouldn't you think its some of that burning up?If not i'm stumped . What grade and type of oil is in it ? Lightweight synth?
    1995 540i Manual build 1/95

  7. #7
    Join Date
    Sep 2006
    Location
    Erie, PA
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    Default

    Quote Originally Posted by Jehu
    Have you looked at your collant reseviour? How's that fluid look,have you measured at what rate you're losing oil?Didn't you post those pics of your valve train with the valve covers off all caked with burnt oil sludge? If that was you wouldn't you think its some of that burning up?If not i'm stumped . What grade and type of oil is in it ? Lightweight synth?
    yup..those were my pics(not something i enjoy owning up to )...the coolant res is good, at the cold min. Usually, after it has been run, there's a 6 inch or so wide spot on the drive over night...oil level is just below 2nd mark on dipstick since I changed it on saturday.

    Black 1995 525i 100K Mi
    Nat1

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