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  1. #1
    J-hook's Avatar
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    Rebuilt Zxi 1100 help

    So i purchased a zxi 1100 with a rebuilt top end this year. Took it out once and it pulled hard for a while but started hesitating. Previous owner stated carbs might need work. Removed the carbs and got them rebuilt at my uncles shop. He knows these style carbs much better than me. I took it out yesterday and it bogged hard out of the hole. If i didnt feather the throttle the ski would die. It cruised around fine at full throttle but was only getting about 6900 rpm indicated and about 40-43 mph indicated. It did not accelerate very quickly either. Since i bought the ski i have drained the tank and installed new oil lines. And had the carburetors done and checked the oil pump for proper operation. Also i notice some oil aroumd the plug hole on the front cylinders. The rear plug looks darkest and rear piston is black in the center now. Both the middle and front piston are still shiny new after about 2.5 hours of ride time. Any help on getting this machine running right would be much appreciated. The ski is a 1996. Click image for larger version. 

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  2. #2
    steve45's Avatar
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    Have you checked the fuel filter? Were the internal filters in the carbs cleaned?

    The plugs don't look like it was running lean.

  3. #3
    J-hook's Avatar
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    Quote Originally Posted by steve45 View Post
    Have you checked the fuel filter? Were the internal filters in the carbs cleaned?

    The plugs don't look like it was running lean.
    Will replace fuel filter but it consumed a full tank in just over an hour which is right on track with what its rated to consume in the manual. The rear cylinder plug stands out to me. Much more black on it not sure why

  4. #4
    J-hook's Avatar
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    Also the middle plug looks very wet to me. I am not at all an expert on reading spark plugs on a triple 2 stroke which is why im looking for help lol

  5. #5
    steve45's Avatar
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    If anything, the plugs look a bit rich. Usually it has to be very rich for it to die. How did you check the plugs? Did you idle back to shore, or did you shut it off during a high speed run and check them while out on the water?

    You might try leaning both high & low screws in 1/8 turn increments and see how it does. If you used the book settings, it's too rich.

  6. #6
    J-hook's Avatar
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    Ok. Leaning is turning the screws clockwise correct? And i didnt idle back. I ran out of fuel and towed it back with a pontoon boat lol

  7. #7
    steve45's Avatar
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    Yes, clockwise is leaner.

  8. #8
    J-hook's Avatar
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    Ok. Ill try leaning all cylinders. Can you access the adjustment screws with the carbs in the hull? Im thinking it might be easier to just remover spark arrestor cover and air box instead of unhooking all the hoses and pulling the whole rack each time. But i am not sure how much room there is to access the screws. I hadnt looked at them when i had the carbs out cause i didnt rebuild the carbs myself.

  9. #9
    steve45's Avatar
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    I don't think there is much room at all, but you can use a 1/4" hex bit and a 1/4" wrench to turn it. Just don't drop the bit!

  10. #10
    J-hook's Avatar
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    Quote Originally Posted by steve45 View Post
    I don't think there is much room at all, but you can use a 1/4" hex bit and a 1/4" wrench to turn it. Just don't drop the bit!
    Ok so i adjusted the carbs like you said. I no longer think thats the issue. If i pull the rear plug wire off the ski it wont start. If i pull the middle wire it will start. And if i pull the front wire it will start. Im lost on why its doimg this
    Nevermind. After priming it a bunch it will start with rear plug disconnected.

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