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Dear, Guys

Do you know the best, easy, magical ...etc (or any) way to decarbonize my Rotax 503 pistons? Any advice and references  would be highly appreciated.

                Thanks a lot .GR

  • Re: Piston decarbonizing

    by » one month ago


    I pull one plug from each cylinder, add 15 mls of Seafoam into each cylinder, let it sit overnight, and then run the engine until the white smoke is gone, then let the engine cool. I then remove the exhaust and examine the piston, cylinder walls, and rings. The result is a clean engine that still has factory spec compression after 17 years and 800 hours of use. I’ve never opened the engine for service or decarboning.  Do what you want, but this process works for me. This routine is part of my annual maintenance in conjunction with my annual condition inspection.


  • Re: Piston decarbonizing

    by » one month ago


    Ed, thank you very much.What is mls in "15 mls"? Is it milliliters ?


  • Re: Piston decarbonizing

    by » one month ago


    Milliliter.....= 1/1000 of a litre

    15 mls or 15 ml in "System International units".....the "s" is not required in multiples.

     

    is a measurement of volume used by all countries of the world except two ....Liberia and somewhere else...

    15 ml is the same as

    it is 0.063 cups....4.0 drams...3.04 teaspoons and about 3.2 of my navels !! and a pinch more than a smidgen...

     

     

     


  • Re: Piston decarbonizing

    by » one month ago


    Glenn, you are such a savior😂


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