New spark plugs, different color
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  1. #1
    PWCToday Newbie Vasilis 440's Avatar
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    New spark plugs, different color

    Hello everyone,
    I used to run my 440 with BR8ES, and they had a dark chocolate color after riding. Today I changed them with B7ES, which is the one the manufacturer recommends. I used up a full tank with 40:1 gas/oil ratio. After the ride I removed the spark plugs to check them and I realized that they had a very pale color, almost like they had never been used before. Does anyone know what happened? Should I adjust the mixture?

  2. #2
    Attention ***** PWCToday.com Is My Home Away From Home JonnyX2's Avatar
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    Re: New spark plugs, different color

    Nothing happened except you changed plugs, from one temperature range to another. You went to a hotter plug. Use the plugs that you get the best performance, you should not need to adjust your carb settings, but you may need to go back to the 8s.
    Last edited by JonnyX2; 08-21-2014 at 06:59 PM.
    Quote Originally Posted by Firebird A/C&Heating View Post
    OMG.....Rules for 550 vintage ski class...550 ski riders do not conform to any kind of rules. That is why you are riding a 550 ski in the first place. Rules suck....
    PS...the rule book will be in my 550 pump
    Quote Originally Posted by WB1994
    Listen , stop your cryin' , its only an X2.

  3. #3
    PWCToday Newbie Vasilis 440's Avatar
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    Re: New spark plugs, different color

    Yes, but this jet ski should use 7's, according to Kawasaki.

  4. #4
    Top Dog
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    Re: New spark plugs, different color

    I run 8's and I think most folks do. I am fairly certain 7's are only to be ran on an absolutely bone stock engine. If you add anything that allows the engine to rev a bit more, it produces too much heat for the 7's. Is your ski totally stock?

  5. #5
    PWCToday.com Is My Home Away From Home
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    Re: New spark plugs, different color

    If they looked and worked perfectly why mess with success? Your drivetrain is apparently tuned to need the BR8ES.
    Riding mostly Lake Austin

    1984 JS440 -- 1989 650sx -- 1991 X2 -- 1992 750sx -- 1995 900zxi (qty 2) -- 1995 X2

    Quote Originally Posted by cujo View Post
    God intended PWC to be two strokes, as well as dirt bikes, snowmobiles, and chain saws....

  6. #6
    PWCToday Newbie Vasilis 440's Avatar
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    Re: New spark plugs, different color

    Yes, the jet ski is totally stock.

  7. #7
    Attention ***** PWCToday.com Is My Home Away From Home JonnyX2's Avatar
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    Re: New spark plugs, different color

    BR8ES

    Just sayin
    Last edited by JonnyX2; 08-26-2014 at 12:56 PM.
    Quote Originally Posted by Firebird A/C&Heating View Post
    OMG.....Rules for 550 vintage ski class...550 ski riders do not conform to any kind of rules. That is why you are riding a 550 ski in the first place. Rules suck....
    PS...the rule book will be in my 550 pump
    Quote Originally Posted by WB1994
    Listen , stop your cryin' , its only an X2.

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