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  1. #1

    kawasaki ultra lx

    I have a kawasaki ultra lx that is only reaching around 70kph. I have had a mechanic do the following, replace spark plugs,16 new intake and exhaust valves, bought r&d air suction valve covers, machined the spark plug holes as they were threaded, compression test came back good. The mechanic has given up! does any one have any ideas? I was thinking it could be ignition coils/ spark plug leads. if so how could I test to see if they are good?


  2. #2
    boudin's Avatar
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    Have you pulled and inspected the pump?

  3. #3
    Pain is fear leaving your body.... rlovebk's Avatar
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    RPMs? You using the yellow key? (never know)

  4. #4
    nicjak's Avatar
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    Sure he got the timing right?

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    Broncosguru7's Avatar
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    also could check the impeller but it would take some serious damage to it to slow it down 20kph

  6. #6
    No I havn't checked the pump. Could that be the problem?

  7. #7
    Checked the impeller looks in good knick

  8. #8
    Quote Originally Posted by rlovebk View Post
    RPMs? You using the yellow key? (never know)
    No using full power orange key. gets to around 8000 rpm at top speed. the mechanic thinks possible spark plug leads but I think he is just clutching at strings.

  9. #9
    Quote Originally Posted by nicjak View Post
    Sure he got the timing right?
    I believe so because it is reaching the same speed before and after the valves were replaced

  10. #10
    nicjak's Avatar
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    So why were they replaced is there more to what you need to tell us?

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