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Oil in spark plugs... cause?

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  • Oil in spark plugs... cause?

    When I took the car into the shop they found oil in the aprk plugs, maily in #3. When I had my valves adjusted about 5k miles ago the mech found the same thing. He replaced the valve cover gasket at the time (so the invoice says). The mech earlier this week said I would need to replace the valve cover gasket to solve the oil in the spark plugs problem.

    My question is; Is the valve cover gasket the source of this problem? or could it be something else? Thanks.

    -Jared

  • #2
    Make sure your tech changes the sparkplug gaskets also, If you look on the diagram Part # 3, those are more likely your culprit.
    http://www.realoem.com/bmw/showparts...60&hg=11&fg=15
    -Tony-
    1991 M3 10Km
    1989 M3
    BEGINS HERE


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    • #3
      Yeah, I think the valve cover gasket from BavAuto comes with those too. So I would change them out as well. Anyone know what, if any kind of sealent is used when changing out gaskets?

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      • #4
        I re-use the gaskets for several times and apply a thin layer of clear silicone. Just make sure you put the spark plug gaskets in the same way you took them out.


        Goodbye M3, you served me well.

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        • #5
          My guess is that this is caused by the O rings between the cam carrier and the head. #6 here
          http://www.realoem.com/bmw/showparts...59&hg=11&fg=15

          You're on the right track though. Replace the cam cover gaskets first, since that's cheap and easy. If that doesn't do it the problem is the cam tray O ring. Not nearly as easy of a fix as the cam cover gasket.

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          • #6
            I agree with Mick. I think it's more likely to be those o-rings but the gaskets are def worth a shot since they are cheap and easy.

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            • #7
              Any result on changing those gaskets? I realize it was awhile ago but I just dredged up this thread because I found a bunch of oil in two of my plugs. Did you end up changing the o-rings?

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              • #8
                Originally posted by Mick View Post
                My guess is that this is caused by the O rings between the cam carrier and the head. #6 here
                http://www.realoem.com/bmw/showparts...59&hg=11&fg=15

                You're on the right track though. Replace the cam cover gaskets first, since that's cheap and easy. If that doesn't do it the problem is the cam tray O ring. Not nearly as easy of a fix as the cam cover gasket.
                couldn't have said it better myself
                Finally at home!!!
                sigpic
                89 ///M3
                84 318i
                84 325eta turbo project

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