too much fuel

So I went to sandlake here in oregon and I was riding and I noticed that it didnt seem like she was putting out all that much power and all the sudden she up shifted and bogged down and died It seemed like i flooded her or something i tried to restart but she didnt want to start after like 5 min...

I have an 01 Blaster that has been sitting for a couple years, got it running and seemed to run pretty well. About 3 days later it's now giving me problems. It will start and run great in neutral, and after I take off it will bog down and die, and then it will start and idle only, and only if...