I'm new to the world of dirt bikes and recently bought a kdx 220 and have never had any problems with it. I start the bike about every other day or so to keep it clean and it started and ran just fine that weekend and the next day but then nothing. A few days after riding the bike would not fire up at all. I have not been able to start my bike since the day after i went riding 2 weeks ago. Please help me out if you know the problem, I have already changed the spark plug and got a new ignition coil what else could this be? Also i dont know if this helps but my engine stop button went bad the day i went riding so i had to put it in 1st and stall it a few times to shut off.