93 heritage has been running great then I had been out for about a hour stopped for a short time and then would not start. Engine turns fine, pulled air cleaner carb is shooting fuel, pulled plugs and does not seem to be getting spark, After about a half hour started up and ran fine for abourt 15 minutes then cut off, same thing has fuel and no spark, let set about 15 minutes (in the rain) then started up after 2 more times made it home. next day started up fine, did not ride. It was very warm the day it acted up 94 degrees. When I say it wasnt getting spark I mean I could not see any from the plug wire or the plug but did not have very many tools with me. Is there a way to check the coil or could it be something else?