The question is this, based on an event that took place the other day. Bike ran fine coming in to work, no problems for years. It sat all day in the sun, just like every other day, but when I came out to go home the bike wouldn't start easily nor stay running. It was backfiring and coughing constantly. Since then I have replaced plugs and cables and have checked out the power cammander to make sure it hadn't gone bad. When I took it out and just ran the CPU there was no major difference. That's as far as I have gotten. So far no luck. Any suggestions?