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  1. #1

    Ultra 150 knocking

    Hey guys,

    I have a 2003 Ultra 150. Replaced the motor last year and this year I stated the motor and took it out. Ran great then all of a sudden the motor knocks. Will still run, but knocks really bad. Sounds like a rod bearing type of knock. Also it back fires. Any ideas what it could be?

    I might even just sell the thing. What do you guys think it would be worth as is?


  2. #2
    This is how I run a jetski shop in the desert nmpeter's Avatar
    Join Date
    May 2008
    Elephant Butte New Mexico
    Welcome to the Hulk.

    can I assume when you installed the engine you put the correct amount of oil into the front and rear balancer chambers? Was it a commercial rebuild, home rebuild or used motor?

    don't run it any more, it's worth a bit more if the crankcases do not have a hole in them from the connecting rod that is about to break.

  3. #3
    The motor was done about 2 years ago from a local Kawasaki Dealer. It was pretty much a brand new motor. Costed over $1900 for the repair at that time. I think I'm just to the point where I want to just get rid of the thing.

  4. #4
    Where are you located?

  5. #5
    I'm located in Wichita, ks

  6. #6
    steve45's Avatar
    Join Date
    Feb 2008
    If it only has a little time on it, I'd take it back to the dealer and see what they say. They should have a record of how many hours were on the clock when they overhauled it.

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