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  1. #1

    Acceleration problem with FX140

    Simple problem and hopefully a simple solution. If I accelerate QUICKLY with my 2004 FX140, it will only reach 40mph. If I slowly increase the speed over 15-20 seconds or longer, it will get up to 55 mph every time. Any ideas on what the problem is? I just changed the plugs, but that didn't solve the problem

  2. #2
    is the engine reving but the craft not going anywhere fast. check your impeller, sounds like cavitation if the engine is running good.

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