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Thread: White cloud and rough idle at startup.

  1. #1
    Join Date
    Sep 2004
    Location
    Northern Europe
    Posts
    191

    Default White cloud and rough idle at startup.

    Hi guys.

    When the car is cold and I start it, I get A LOT of white smoke coming from the exhaust. This is combined with very rough and uneasy idling. When I rev the engine a bit, it settles and then runs fine. What the fudge can be wrong?? I have a diesel, FYI.

    I also have some white fumes when the engine is warm, and somebody asked me if I was burning engine oil, and somebody else asked if I had coolant leaking into the engine.

    Hmmmmmm. Any ideas?

  2. #2
    Join Date
    Aug 2004
    Location
    Dubai
    Posts
    834

    Default

    check your pistons oil rings they are warn out. so they evaporate the oil in the manfold which drips in the valves in the night and burns at once in the morning. so you have to change the rings or simply overhole job is what you need.

  3. #3
    Join Date
    Sep 2004
    Location
    Northern Europe
    Posts
    191

    Default

    Ok, thanks.

    I will look into it. Does anybody disagree with this explanation? (no offence, hehe)

  4. #4
    Join Date
    Dec 2003
    Location
    Eastern Tennessee USi
    Posts
    14,839

    Default

    what is the weather like where you are runing this engine?
    95 E34 530I V2.37
    ===========
    Those who make peaceful revolution impossible will make violent revolution inevitable.

    John F. Kennedy

  5. #5
    Join Date
    Dec 2003
    Location
    Central NJ - USA
    Posts
    1,540

    Default

    all diesels run rough when cold....is this your first diesel? did the problem just start? a little more info couldn't hurt =]

  6. #6
    Join Date
    Sep 2004
    Location
    Northern Europe
    Posts
    191

    Default

    The problem is relatively new. Yes, this is my first diesel (or first car, for that matter). The weather here in Northern Europe is pretty cold, ca. 10 degrees Celcius, but not that cold. I drove it to Southern Europe this summer, where it got very hot! In fact, this is where I started noticing the problem.

    When the car is up and running, it runs like a charm, no issues here. It is only in the first 1/2 minute or so that it sounds like it is really struggling to keep going. Once in a while during this 1/2 minute it also chokes. But apart from this it runs smooth as butter.

    The engine has 325.000 km on it. It is a lot, I know, but apprx. 80.000 km's ago the engine was taken apart and got the royal treatment!

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