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Thread: 250r shorting plugs

  1. #1
    Join Date
    Jun 2007
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    250r shorting plugs

    My 1984 atc 250r keeps fouling out the plug after about an hour of use? what do you suppose the problem could be?
    1984 atc 250r, 1984 atc 200m, 1986 atc 250es, 1988 trx200sx, 1995 polaris sportsman 400L, 1996 polaris sportsman 400L

  2. #2
    Join Date
    Jun 2007
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    saint marys, georgia
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    also i am running 50:1 using mobil syn. so i am pretty sure its not the oil, and when it is running it runs like a top.
    1984 atc 250r, 1984 atc 200m, 1986 atc 250es, 1988 trx200sx, 1995 polaris sportsman 400L, 1996 polaris sportsman 400L

  3. #3
    Billy Golightly's Avatar
    Billy Golightly is offline Always finding new and exciting ways to not give a hoot in hell Catch me if you can
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  4. #4
    Join Date
    Jan 2003
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    842
    hey, what color is the plug? If it's kinda gray metalic, you may be too lean, and the piston is transfering metal to the plug.
    one cylinder is not enough!!

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