Valve stem seal

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  • Nuggets

    #1

    Valve stem seal

    White smoke from exhaust, burning oil. Its not alot just enough to notice. Im assuming the valve stem seals? Posting this just in case im missing something.
  • niclpnut
    Forum Sage
    Past Site Supporter
    • Sep 2010
    • 1274
    • Peculiar, MO

    #2
    Does the smoke happen at start up then go away?

    Smoke on decel?

    What's warm compression?
    83 GS1100ES rebuild:

    http://www.thegsresources.com/_forum...d.php?t=170032

    Budget GSXR Conversion:

    http://www.thegsresources.com/_forum...d.php?t=200563

    New to me bike: 2008 B-KING

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    • tkent02
      Forum LongTimer
      Past Site Supporter
      • Jan 2006
      • 35571
      • Near South Park

      #3
      How many decades has it been sitting out behind some shed?
      http://img.photobucket.com/albums/v5...tatesMap-1.jpg

      Life is too short to ride an L.

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      • Nuggets

        #4
        re

        Ive been riding it for 4 months and the first its been doing this. It smokes under moderate to heavy throttle only. Its never been sitting. Always been running.

        Comment

        • Nuggets

          #5
          re

          Also pretty sure its not piston rings. Too much power and to smooth running. No tools for compression check.

          Comment

          • Steve
            GS Whisperer
            • Jun 2005
            • 35925
            • southwest oHIo

            #6
            Originally posted by Nuggets
            . It smokes under moderate to heavy throttle only. Its never been sitting. Always been running.
            Originally posted by Nuggets
            Also pretty sure its not piston rings. Too much power and to smooth running. No tools for compression check.
            You can have weak rings and still have good power and smooth running.

            It has been my experience that, if an engine smokes under "moderate to heavy throttle", the oil is getting past the rings.
            If it smokes while decelerating or at idle (high vacuum situations), it's more likely to be valve seals.

            .
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            • LarryJ

              #7
              What Steve posted is typically correct. Check your jetting too.

              Comment

              • Guest

                #8
                When the carb butterflies are closed the engine will pull oil through old valve stem seals. If it smokes with accel then more than likely it's rings.
                Or too rich as stated.
                Are the spark plugs shiny black or flat black?

                Comment

                • Nuggets

                  #9
                  re plugs

                  Flat black. Seems to be some metal build up on them as well. only cylinder #1

                  Comment

                  • Guest

                    #10
                    Originally posted by Nuggets
                    Flat black. Seems to be some metal build up on them as well. only cylinder #1
                    Metal build up is detonation.

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                    • Nuggets

                      #11
                      re

                      anything that might cause over heating of the engine? other than the obvious? oil flow is good. pods with 120 mains. Bad plugs?

                      Comment

                      • Guest

                        #12
                        Originally posted by Nuggets
                        anything that might cause over heating of the engine? other than the obvious? oil flow is good. pods with 120 mains. Bad plugs?
                        What bike?

                        Comment

                        • gearhead13

                          #13
                          Blue smoke is oil burning, white smoke is condensation burning off from the exhaust.
                          A wise man told me that for every gallon of gas burnt there is a gallon of water run through the engine and out the pipe.

                          Comment

                          • Guest

                            #14
                            White smoke is also typically unburnt fuel, what is your oil level? is there gas in your oil?

                            Comment

                            • XXWoodmanXX

                              #15
                              Sounds like youve worn a "bevel" in your piston ring(s)

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