I just bought an 06 ninja 250, 9500 miles, today, guy road it around, as did my friend, and it was running great. Got it home, and now im having some issues. When i start the bike, it rev's up fine and everything, and will idle for like 10 seconds or so, it varies, but then the engine starts to putt and die's out. It then proceeds to start back up perfectly fine, and do the same thing again. I had it idiling in Neutral for a couple minutes at one point, but when i got on the bike and tilted it to riding position, it cut out. I know little to nothing about bikes, as this is my first, any help would be appreciated.