Recently I've had problems with my starter and the pull start. Come to find out the little rubber grommet that separates the bolt on the starter coming through the housing was rotted out fix that. Found that the inside of the pull start had came apart fixed that. Then the motor would not turn over with the starter or pull start. I took the pull start back off I put a socket and ratchet on the nut for the pull start and turn it over by hand a few times. It was stiff for two or three turns and then something came free and turned over real easy. Now the starter and pull start works but my four wheeler will not start. When I crank it over you can smell gas and it has spark but won't do anything but crank and maybe backfire after cranking for about 15 to 20 seconds. Does anyone have any idea what this could be.