I have a 1999 Suzuki DT5Y ran well on the water for 10-15 minutes then quit and would not restart. Have tried cleaning car,b worked great got on water died again after running 10-20 minutes. Checked gas tank vent, spark plug, gas to carb (since from built in tank may be just gravity) but all seem ok. Here we are in the middle of a great summer, a real bummer. Any ideas, and trouble shooting suggestions would greatly appreciated.