if your float is sticking you can tell by looking at the oil... it will be high on the dip-stick and smell like fuel...

 

well thats just if teh float stuck for a while i think if tefloat just stuck for a lil bit it would start loading up teh engine the engine will start bogging or shut off and gas will come out the hose at teh bottom of the carb bowl. doesn't mean there is def water in the oil.

 

I've had this problem to,the rubber tip on the needle & seat was worn and not sealing,also alot of bumpy riding can bend the tang on the float,it's a easy fix either way and not expensive