I was up north last weekend, parked the bike for a couple hours and came out to a bike that would turn over but not fire. Strange thing is that when I turned the ignition off or if I rocked the kill switch after cranking it for awhile it would back fire. (exhaust, not through carb). After towing it home I began the process of elimination. Checked spark and nothing was there...checked voltage at the coil and read zero. BUT, when I wiggled the ignition switch, I'd get spark at the plug and 11 volts at the coil. I replaced the switch and still not firing but will back fire when turned to the off position. I do have a reading of 8.9 at the coil now. Any ideas folks? Thanks for any replies.