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  1. #1

    Fuel in the ultra 300

    I have a 2009 ultra 250x. Only problem ever had was fouled plug. I have read that the 2009 are a time bomb if not upgraded so am thinking bout going w the 300. My only problem is i run 93 fuel most of the time but the marinas around here only have 87. I get it when i run out on the water. My 250 runs fine on it but what will the 300 do? What about if i added some kind of fuel additive when i run the 87? My 250 got roughly 60 hrs on it and i love it but scared it could go any minute


  2. #2
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    Fuel in the ultra 300

    U have been lucky so far running on 87. I bet there is damage in the motor. The 300 requires no less then 91.

  3. #3

    Fuel in the ultra 300

    Damage to my 250? Would putting an additive when i had to run the 87 help? Do you have a link to buy the pump upgrade everyone talks about?

  4. #4
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    Fuel in the ultra 300

    Quote Originally Posted by Kona dawg View Post
    Damage to my 250? Would putting an additive when i had to run the 87 help? Do you have a link to buy the pump upgrade everyone talks about?
    Well one if you have a 2009 it's a 260 not a 250 and yes that ski is not ment to be run on 87 so I bet your pistons and or valves look like shit after continuiius low grade fuel. I'd be scared its gonna blow up to.

  5. #5

    Fuel in the ultra 300

    Sorry. 2008

  6. #6

    Fuel in the ultra 300

    Its was only a few tanks and now that i think bout it i think it was 89

  7. #7
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    Fuel in the ultra 300

    All the pump parts can be found in the online store. Just bring up a 2011 300x and go to the jet pump and order all the bearings shaft and seals should be arround 200$. Good luck.

  8. #8

    Fuel in the ultra 300

    Thanks a ton. By doing this will it make my ski as reliable as any other?

  9. #9

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    Quote Originally Posted by FIRE0021 View Post
    U have been lucky so far running on 87. I bet there is damage in the motor. The 300 requires no less then 91.
    So from the 250/260 to the 300 Kawi went from a 90 octane requirement to 91? And is there still no knock sensor on the engine? If so, what's the story here? Seems every engine in the world has a knock sensor these days.
    How does Sea Dog work with 87 required/91 recommended? What are they doing that Kawi is not?

  10. #10
    Formerly Ultra250 TN Aquaholic6801's Avatar
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    So from the 250/260 to the 300 Kawi went from a 90 octane requirement to 91? And is there still no knock sensor on the engine? If so, what's the story here? Seems every engine in the world has a knock sensor these days.
    How does Sea Dog work with 87 required/91 recommended? What are they doing that Kawi is not?[/QUOTE]

    You answered your own question before you asked it......

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