[tbone2004]

I would have suggested the fuel cap like another person already said. I know you said you blew it all out of the carb, but years back my father and I had similar problem and it wasn't until we took a very fine piece of wire and cleaned out each hole on the carb that the gallons of gumout had not cleaned apparently...after that it was fine. Sounds to me it is choking itself or the fuel is getting in the carb, but not getting out. Please post again when resolved - many of us will encounter this no doubt at some point....