My 2001 9.9 4 stroke Yamaha stalled out on me 3 time Saturday afternoon. I pulled the choke and it would start. As soon as I turned the choke off, it would stall out again. I started it up today and it ran flawless. I shut her down and restarted it several times and ran it for a few minutes without any problems. The dealer said the carb has something in it. Any suggestions? He cannot look at it until next week.