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    Oil in the water when engine running

    Hi guys

    Every time I start my engine, there are oil bubbles behind my boat. It's no the green oil from the leg, as the reservoir is still full.
    Mechanic said it maybe the oil cooler problem.
    Any hint will be greatly appreciated, guys!

    Boat Bayliner 2452 year 1995
    Alpha 1

    many thanks,

    Jan
    Jan
    Vancouver, BC, Canada
    Bayliner Classic 2452 (year 1995)
    Mercruiser 5L, Alpha One

    #2
    Oil in the water when engine running


    Hi guys, I am resending this to this forum (posted at a wrong place)

    Every time I start my engine, there are oil bubbles behind my boat. It's no the green oil from the leg, as the reservoir is still full.
    Mechanic said it maybe the oil cooler problem.
    Any hint will be greatly appreciated, guys!

    many thanks,


    Jan
    Vancouver, BC, Canada
    Bayliner Classic 2452 (year 1995)
    Mercruiser 5L, Alpha One

    Comment


    • 88fourwinns
      88fourwinns commented
      Editing a comment
      But to be on the safe side, check the oil dipstick for high oil level and milky appearance and for mayo appearing deposit under the valve cover. If you see this, then remove all the plugs, disable the ignition and crank the engine over. If water shoots out of any of the plug holes then you have to find out why and get the milky oil out of the engine and water out of the cyls.

    • talman
      talman commented
      Editing a comment
      Carb or fuel injected?

    • builderdude
      builderdude commented
      Editing a comment
      Think we lost op
      Op's post is regarding an oil sheen (oil bubbles) on the water behind the boat while running.
      95 should be a carbureted engine.

    #3
    Most likely either the oil cooler if equipped as not all engines have one or power steering cooler.
    1997 Maxum 2400 SCR 5.7LX Bravo II

    Mike

    Comment


      #4
      Are you sure it is oil? You could be getting excess fuel and it would exit thru the exhaust and would cause a sheen on the water.
      Phil, Vicky, Ashleigh & Sydney
      1998 3055 Ciera
      (yes, a 1998)
      Previous boat: 1993 3055
      Dream boat: 70' Azimut or Astondoa 72
      Sea Doo XP
      Sea Doo GTI SE
      Life is short. Boats are cool.
      The family that plays together stays together.
      Vice Commodore: Bellevue Yacht Club

      Comment


        #5
        Originally posted by itsabowtime2 View Post
        Are you sure it is oil? You could be getting excess fuel and it would exit thru the exhaust and would cause a sheen on the water.
        Since you said bubble I also thing this might be it. Does this only happen when you first start the boat? If so it might be just a rick condition when first started.
        1999 Bayliner Ciera 2655
        5.7 Bravo 3

        Comment


          #6
          watch your PS fluid, power trim fluid level...
          Joon, Kathy, Jaden & Tristan
          Uniflite 42 AC, DD 671N
          93 3058 sold
          92 2855 (day boat)
          91 Fourwinns 205 (lake boat)
          Longbranch WA
          Life is Good

          Comment


          • builderdude
            builderdude commented
            Editing a comment
            That's the first place I'd look as well.

          #7
          My carb's engine ran very rich when it first started. Over choked. There was a sheen that didn't happen if the choke was full open.
          Describe 'bubbles' I had a trim tab leak that definitely looked like bubbles. I'm not sure we know what bubbles we are looking at.
          Tally and Vicki
          "Wickus" Meridian 341
          MMSI 338014939

          Comment


            #8
            Thank you for all replies, I did not checked this side for awhile, as I was busy with other issues and decide to address this problem in spring.
            Thank you thank you thank you, you guys rock!!!
            Jan
            Vancouver, BC, Canada
            Bayliner Classic 2452 (year 1995)
            Mercruiser 5L, Alpha One

            Comment


              #9
              Originally posted by jstefano View Post
              Thank you for all replies, I did not checked this side for awhile, as I was busy with other issues and decide to address this problem in spring.
              Thank you thank you thank you, you guys rock!!!
              oil does not generally make or leave bubbles on the water, but will leave a rainbow sheen... a rich mixture of fuel can make bubbles.... not from the fuel directly, but from the soot that gets produced. soot bubbles are common when an engine is being over fueled... and it makes the transom nasty with residue.. not an oily residue, but a black, staining residue.


              NU LIBERTE'
              Salem, OR

              1989 Bayliner 2556 Convertible
              5.7 OMC Cobra - 15.5x11 prop
              N2K equipped throughout..
              2014 Ram 3500 crew cab, 6.7 Cummins
              2007 M-3705 SLC weekend warrior, 5th wheel
              '04 Polaris Sportsman 700 -- '05 Polaris Sportsman 500 HO
              Heavy Equipment Repair and Specialty Welding

              Comment


                #10
                next time drop a bucket and pull up a sample .

                smell it, i too believe its fuel why is there fuel ?

                one or more plugs not firing maybe, plull the plugs find wet ones ?

                no compression on a hole maybe.
                Be good, be happy, for tomorrow is promised to no man !

                1994 2452, 5.0l, Alpha gen. 2 drive. Sold ! Sold ! Sold !

                '86 / 19' Citation cuddy, Merc. 3.0L / 140 hp 86' , stringer drive. Sold ! Sold ! Sold !

                Manalapan N.J

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