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 with a guide on how to see what is wrong with the F.I. so we run a wire to the battery and hooked it in the F.I. light which must of been the wrong place and shorted something out now the lights won't work and the fuel pump won't even kick on, plus it won't crank.