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    MSX 110 6700 rpm max

    I bought a MSX 110 that won't go beyond 6700 rpm. There is no check engine light and runs fine otherwise. I read in the service manuel that it could be detonation causing this, so I am running 93 octane fuel with octane booster but still 6700 rpm. I also read that it could be an air leak. Would a knock sensor failure cause this to happen? I have a MSX 150 for spare parts. I'm from west central Illinois. Does anyone know of a dealer in this area that will still check this with a computer ? Thanks for any ideas.


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