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  1. #1

    Loss of speed and power. Help! 2011 FZS

    Need help. Riding normally yesterday and all of sudden 70% power loss. Starts, idles and will get on plane. Top speed 38. Oil looks good. Any thoughts? Totally stock!


  2. #2
    Is learner mode off? If it on, that will make the machine go up to 5000RPM for younger riders!

    Quote Originally Posted by Familycat View Post
    Need help. Riding normally yesterday and all of sudden 70% power loss. Starts, idles and will get on plane. Top speed 38. Oil looks good. Any thoughts? Totally stock!

  3. #3
    Also, Check out the supercharger, piping, and clutch........may not be making boost. Is the check engine light on? Check the pump: wear ring and impeller. Check the vacuum hose from the map sensor to intake manifold it could be loose or cracked. Check all the air hoses and fittings again even if they are tight there could be a small crack or tear creating a leak. Check compression. Check for intercooler restriction.

  4. #4
    Never put it on learner mode. Not sure how? No engine lite on. Not impeller or wear ring. Will check others.

  5. #5
    Do you see orange light or led on your dashboard while your ski is running?


    Quote Originally Posted by Familycat View Post
    Never put it on learner mode. Not sure how? No engine lite on. Not impeller or wear ring. Will check others.

  6. #6

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    First thing replace all sparkplugs, possibly fouled spark plug, usualy a bad SC clutch will still run about 50-55 mph and turn 5000+ rpms at full throttle . Tommy Jordan

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  8. #7
    Will check plugs. Runs almost 6,000 rpm but only 40 mph.

  9. #8
    big john's Avatar
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    reverse arm is not all the way down ???, wont rev over 3000 rpm in reverse, just a thought

  10. #9
    When you turn off the engine do you hear the super charger clutch spin for a period of a couple secs or awhile?

  11. #10

    Join Date
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    Usualy 5500-6000 rpms max is a bad Sc clutch not locking in spins in both directions. easy to check remove hose from super charger and stick your finger in there and see if super charger wheel will spin both ways if it does then sc clutch is bad. DO NOT DO THIS WHILE THE ENGINE IS RUNNING OR TRYING TO START SKI! Test only with safty lANYARD OUT OF SKI, TOMMY JORDAN

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