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  1. #1

    Join Date
    Jan 2011
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    piston wash question.

    Hi guys i am after some input please. I have a 2006 GP1300 , it has milled head 145 , 145, 138 psi , d-plate riva efi controller , riva air intake , 110 hours.
    Today i put a bore scope down just to look and noticed that the was not a noticable piston wash , what i mean is the front piston is amost clean i can see the 05 F stamped on the piston the other two have very little carbon build up . The ski is premix runs on 89 ron petrol and the riva contrler is on 4616.
    The plugs are nice and moist and maybe a little bit on the rich side . Ski runs great.
    Is this normal or could it be over fueling ? Runs the original injection oil just premix . Top of piston lork a little wet but definatley not dry .

    Thanks


  2. #2
    WATER WOODY's Avatar
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    Aug 2005
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    Minden, Nevada, United States
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    Get yourself a tach and properly tune it if your looking for a little more, or leave it alone and ride it. I always run my ski's rich, they run cooler and I seem to get alot of hours out of them.

  3. #3
    GoFastGuru's Avatar
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    Jul 2010
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    guntersville Ala
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    Quote Originally Posted by WATER WOODY View Post
    Get yourself a tach and properly tune it if your looking for a little more, or leave it alone and ride it. I always run my ski's rich, they run cooler and I seem to get alot of hours out of them.
    best advise on forum just the truth

  4. #4

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    Jan 2011
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    Australia
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    Thanks for the advice i think i will take your advice .

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