Went to start my bike the other day and that dang thing wouldn't fire. Just a couple of backfires. Pulled the plug out and cleaned it off several times but nothing. Got a new plug and the bike fired second kick and seemed to run great. So fast forward to yesterday. Go to start bike to rip around the place a bit and again fire and die, then backfire and kinda want to start but then nothing. Pulled plug out a few times to clean it up. Pulled the tank and drained fuel and added fresh gas. Was able to get it running shortly after that. Ran up and down the road and had her purring. Started and rode it along with my other bikes several times on a little woods loop I have and ran like a champ. Low and behold I go out to load it this morning to ride some arenacross. Decide to start if first to make sure. Wouldn't you know it. Damn thing won't start again!!! Bought the bike it late August and have only ridden it twice on practice days. What the hell could be fouling these plugs?