dude, throw that fuel away. second get long plug like above said. major damage can come from using short plug. also, set both high speed needles and low speed needles all the way in, then back each one out anywhere from 2-3 full turns. it should stay running. if it stays running then play with it from there, most likly the gas, plug and lean top will couse your problem. simple fix but could couse damae if not fixed very soon.