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  1. #1

    Need help with Yamaha Jet ski ... No speed

    My brother has a 1999 yamaha 1100 jet ski.. last year we installed new engine in it..

    It ran good for a few weeks and then the exhaust temp light kept coming on.. The dealer said it had a bad catalitic converter..

    My brother bought the CAT eliminator kit... and although the ski runs good ... it has only about 3/4th the power id did when we installed the engine.. it tops out at about 45mph... It would run 55-57 new..

    Anyone have any ideas.. ??



  2. #2
    jdog800's Avatar
    Join Date
    Feb 2007
    Alexandria L.A.
    They didnt make a 1100 in 99 are you sure about the year? They quit making the 1100 in 96 and it didnt have a cat.

  3. #3
    jdog800's Avatar
    Join Date
    Feb 2007
    Alexandria L.A.
    wait they did make the ventura 1100 in 97

  4. #4
    Nothin' runs like a Deere IowanGPR's Avatar
    Join Date
    Sep 2006
    Waterloo, IA
    could me many things bud, is the motor you installed carbed or injected? need more info I guess

  5. #5
    It is carbed.. I thought it was a 1100..but maybe its a 1200.. its two stroke! I could be wrong on the year.. maybe its a 2001 or 2002.. Im not sure..

    Sorry... i just had the thought about asking on here .... i never asked him for his info..

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