MY 2012 500 King Quad roles over good and fuel pump fires up but he bike won't start ???

I had a sportsman 01 and it was doing the samething take sparkplug out put cap back on top ground it to the body try and start it look to see if you see the sparkplug is throw blue sparks if its yellow. Anyway if its not blue it aint gone crank could be the coil there something not letting throw enough volts somewhere it was my coil n satator I had a sportsman 01 and it was doing the samething take sparkplug out put cap back on top ground it to the body try and start it look to see if you see the sparkplug is throw blue sparks if its yellow. Anyway if its not blue it aint gone crank could be the coil there something not letting throw enough volts somewhere it was my coil n satator