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E39 E46 BMW excessive oil spray when removed oil filler cap?

  • 10-05-2015 10:52PM
    #1
    Colash
    Registered Users, Registered Users 2 Posts: 1,377 ✭✭✭


    im just wondering can anybody in the know how of these engines { 2.2litre e39 and the 1.8litre e46}, tell me if this is a major problem. i checked out one or two cars over this weekend i was interested in buying and on both occasions while the cars were running i removed the oil filler caps and a good spray of oil came out ??


Comments

  • #2
    Atlantic Dawn
    Registered Users, Registered Users 2 Posts: 85,666 ✭✭✭✭Atlantic Dawn
    GDY151


    Any car I have run with the oil cap opened sprays oil all over the engine bay, was an error on my part leaving it open on oil change, wouldn't think it's a problem. Any reason why you would open it with the engine running?


  • #3
    Colash
    Registered Users, Registered Users 2 Posts: 1,377 ✭✭✭Colash


    Atlantic Dawn wrote: »
    Any car I have run with the oil cap opened sprays oil all over the engine bay, was an error on my part leaving it open on oil change, wouldn't think it's a problem. Any reason why you would open it with the engine running?

    I've only seen it happen on diesel cars meself


  • #4
    Eric Cartman
    Registered Users, Registered Users 2 Posts: 26,280 ✭✭✭✭Eric Cartman


    Colash wrote: »
    im just wondering can anybody in the know how of these engines { 2.2litre e39 and the 1.8litre e46}, tell me if this is a major problem. i checked out one or two cars over this weekend i was interested in buying and on both occasions while the cars were running i removed the oil filler caps and a good spray of oil came out ??

    timing chain is below the oil cap on my e38 , id imagine some other moving part is below the oil cap so it sprays out quite a bit. id be more worried about no oil spray to be fair.


  • #5
    challengemaster
    Registered Users, Registered Users 2 Posts: 16,930 ✭✭✭✭challengemaster


    Colash wrote: »
    im just wondering can anybody in the know how of these engines { 2.2litre e39 and the 1.8litre e46}, tell me if this is a major problem. i checked out one or two cars over this weekend i was interested in buying and on both occasions while the cars were running i removed the oil filler caps and a good spray of oil came out ??

    Why on earth would you do this?


  • #6
    Colash
    Registered Users, Registered Users 2 Posts: 1,377 ✭✭✭Colash


    challengemaster wrote: »
    Why on earth would you do this?

    Do what?


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  • #7
    Flood
    Banned (with Prison Access) Posts: 560 ✭✭✭Flood


    This would be normal, you have moving parts with oil thus oil will spray out. If it didn't there would be no need for the cap.


  • #8
    challengemaster
    Registered Users, Registered Users 2 Posts: 16,930 ✭✭✭✭challengemaster


    Colash wrote: »
    Do what?

    Remove the filler cap with the car running? It doesn't tell you anything... Unless you're somehow mystic meg-esque predicting the quality of the car from the oil spatter pattern :pac:


  • #9
    Senna
    Registered Users, Registered Users 2 Posts: 8,800 ✭✭✭Senna


    This was years ago, but I remember someone showing me an engine running with the oil cap off and there wasa very small amount of blue smoke coming out, I think they were explaining how to check if head gasket was gone.



    Might be completly wrong, but I do remember something about taking the cap off while engine was running.


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