I bought a 110cc Gio Dune Buggy, used. the guy before me said it ran well, he stored it for two years. Pulled it out of the garage, and got the carb cleaned, it ran well so he sold it. I brought it home, ran if for 20 minutes (it ran well) then it stalled, I started it again, it ran for 30 seconds and stalled. Then it didn't even want to start, rolling very slowly, I assumed battery dead so I gave up for the day. The next day was literally a wash and repeat. I didn't even charge the battery it fired right up, ran for 20 mins then stalled etc...

It seems to me it is over heating, then borderline seizing. Any ideas? I am no where near a mechanic, though I am not afraid to try.