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  1. KFX 450R Beast not starting...

    Engine/EFI/Drivetrain
    Hey experts, 08 KFX 450R not starting. Put in new spark plug, new battery, and new fuel pump. I have the fuel pump out of the gas tank and connected and not hearing the prime. I have checked the orange fuses and they are good. Looking to get the fuel pump working...
  2. 08 KFX450 Fuel Pump not Priming

    General Discussion
    Have been using an 08 KFX450 and haven't experienced any issues. One day, while it was being driven, it just died and wouldn't start. I have been reading on the forums for solutions, and have checked fuses, main fuse, relays and rollover sensor and no luck. It does not make the priming noise...
  3. Help Needed!!! Cut out @ half to full throttle

    Member Introductions
    Hello all. I just bought a kfx 450 2008. Everything is stock. The problem I have is that it has no power after 1/2 throttle to full throttle, as soon as you push the throttle past half it just breaks down severely. I have tried: a new spark plug checked the current at the tps all good checked...
  4. 2008 KFX450R Problems

    Engine/EFI/Drivetrain
    Okay guys, I got my Kfx a while back and I'm pretty much new to these ATVs. So back to the problem I would be going and the KFX would be running fine but when I hit 75-100% throttle it would miss and sputter really, really bad. And me and my brother was trying to fix it and we seen a website...
  5. Not starting & not hearing fuel pump ?

    Engine/EFI/Drivetrain
    was running fine, shut it off to hop off and move a branch laying in the middle of the trail. got back on and when i turned the key on and electric, the fuel pump wasnt filling up like normal. And i would try to start it, just kept turning over, but wouldnt actually fire up. dk why, guessing...
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