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Sudden loss of top-end power

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  • Sudden loss of top-end power

    Was riding around as normal this last weekend and my 1995 900 Tigershark suddenly lost top-end power. The sound of the motor running has also changed to a more hollow throaty sound.

    What should I start checking?
    -Spark is present on all 3 cylinders. I did notice while it was idling that the RPM drops when I disconnect the spark plug wire from the plugs 1 & 2, but not plug 3. Does this mean anything? I know cylinder 1 is supposed to handle the majority of the engine's load.
    -I did notice that pouring gas down the throat of the 3rd carb made the engine rev up higher, but don't know if that proves anything either.
    -Compression tested 120psi in both cylinders 1 & 2, but only 100psi in cylinder 3. I know everything I've read says this is bad, but these are the same compression readings I recorded last summer when it was running just fine.

    Please point me in the right direction.
    Joe Kissell<br />-1995 Tigershark 900<br />-1986 Kawasaki 650 X2

  • #2
    Re: Sudden loss of top-end power

    Check the exhaust system for leaks into the hull, You might want to clean out the carbs if it hasn't been done in the last 2 yrs.
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