I was out riding the other day and my bike just died on me...no loud noise, nothing crazy, just died. I tried to start it back up but nothing. When I got the bike home it would start but seems to be running off one cylinder only, and there's gas coming out of the upper exhaust pipe. It's fuel injected, 2007 street bob, 30,000+ miles, ran great before it died. I changed the plugs, the back cylinder was black. Could this be the coil? What other things could cause gas to come out the exhaust? Thanks in advance for the help!