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Oil coming out of the dipstick tube

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  • Oil coming out of the dipstick tube

    I have a 4.3L V6 merc and I am getting oil out of the dipstick tube. I have 160 to 170 compresion on all cylinders. There is no water in the oil. Any ideas?


  • #2
    Re: Oil coming out of the dipstick tube

    Put the dipstick back in!

    Comment



    • #3
      Re: Oil coming out of the dipstick tube

      Your PVC valve is plugged up.

      Comment



      • #4
        Re: Oil coming out of the dipstick tube

        PCV....
        Positive
        Crankcase
        Ventilation

        Sorry, i just had to do that..

        Comment



        • #5
          Re: Oil coming out of the dipstick tube

          As previously posted....PCV valve. Pull the valve off and holding it by each open end, shake it lightly back and forth. If you can not hear the metal ball rattling back and forth, change it out.

          Another thing that would cause this is if the engine was FULL. I mean full of oil; oil and fuel or oil and water. You already stated there was no water....................
          Is the oil very black and does it smell like fuel?

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          • #6
            Re: Oil coming out of the dipstick tube

            Originally posted by Pete104 View Post
            Put the dipstick back in!
            I like that smart *** comment the best.

            Comment



            • #7
              Re: Oil coming out of the dipstick tube

              cracked dipstick tube
              overfilled and aerated the oil, check and adjust oil level
              excessive blow-by , check with leakdown test
              you dont list a year, may not have a real pvc valve, just open tubes going to the flame arrestor.
              NO PERSONAL QUESTIONS, THIS IS WHAT THE FORUM IS FOR.

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              • #8
                Re: Oil coming out of the dipstick tube

                Are you sure it has PCV's. Boat generally do not have them.

                Comment



                • #9
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                  Re: Oil coming out of the dipstick tube

                  Originally posted by phantom2006 View Post
                  I have a 4.3L V6 merc and I am getting oil out of the dipstick tube. I have 160 to 170 compresion on all cylinders. There is no water in the oil. Any ideas?
                  The boat is a 2006 with less than 100 hours on the motor. The pcv valve is just a tube. The oil is black and does not smell like gas. I did put the dipstick back in tight and it still leaks out the top of the tube. It only does it when the boat is ran at high rpms. It does need an oil change but I would think that would not be the problem.

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