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  1. #1

    HELP...Kawi 1100 B1 Bogs on Hard Right Turns

    Hey All,

    I built an 1100 B1 and I'm having an issue that I cant seem to figure out. When I make a hard Right Turn the ski will bog and it will take a while riding at 1/4 throttle to get back up to full rpm. I was told that I was having a lean issue, and to flip my carb rack so that the pumps are on the starboard side facing away from the motor. I did that, and now the problem happens when I turn hard Left.

    Any Ideas???


  2. #2
    swlamarshrunner's Avatar
    Join Date
    Dec 2014
    Lake Charles, Louisiana
    How much fuel is in your tank when this is happening, what is your fuel pickup setup like and which carbs are you running?

  3. #3
    Open the carbs up and check the floats.

  4. #4
    Hurricane1000's Avatar
    Join Date
    Oct 2005
    Gulf of Mexico
    Sounds like you need a new fuel pump or clean your fuel pump as you are not getting enough fuel pressure

  5. #5
    Typical "left turn syndrome" that alot of carb fed marine engines have. There is a section in the Mikuni Super BK manual that describes exactly this in some detail

  6. #6

    I have flipped my carb rack and the problem moved to the other side (left turn bog).

    I lowered popoff from 21 to 18, and still the same problem. Carbs are clean and all parts are new.

    I tested a set of fresh rebuilt (by Tim) Novis and no change.

    New blowsion fuel pickup, always full tank of fresh gas.

    Tested with and without fuel restrictors as well.

  7. #7
    Tool Bag water worx's Avatar
    Join Date
    Aug 2006
    Sunny Fla
    Quote Originally Posted by Heloboby7 View Post
    Open the carbs up and check the floats.
    Really ???

  8. #8
    Quote Originally Posted by water worx View Post
    Really ???
    Lol double pumper

  9. #9
    Update. I installed and valve body from a set of NOVI carbs that has a bearing pressed into the hole for the check valve, and a groove milled into the surface.

    It almost solved the problem completely, but after about 5 laps it will start to bog again, but recovers much faster.

    The only real solution to this is to rotate the carbs somehow. I purchased a Rhaas plate for the GP1200 carbs, and I'm going to try and modify it to run my carbs on it. Click image for larger version. 

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  10. #10
    Interesting mod there, i just ordered a Pro-Tec intake manifold to replace the RIvA one on the engine going into my B1 to allow the OE gp1200 mounting in hopes of avoiding this.

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