gas in oil - Jonway yy250 54b

[maddlibb]

About a month ago, while riding my horse power died but engine was running. I turned it off but would not turn over, Looked like oil shooting out of carb drain hose and a sealed gasket area right by the drain hose. I checked the oil and it looked over filled but smelled like gas and was very runny. I took the body apart, changed the oil, tried to turn it on, when it tries to turn over it shoots gas out of carb drain line. I m going to remove and clean the carb, maybe just a stuck float, but Im trying to figure out how gas got in the oil.

Anyone had a similar experiance? Its getting warm here and I want to get back on the road!