HI BUCK HERE, I WOULD SUGGEST TRY THIS,RUN IT UNTILL IT QUITS, IMMEDIATELY TRY TURNNG THE ENGINE OVER BY HAND, IS IT STIFF, IDENTIFY YOUR ISSUE, IS IT RUNNING OUT OF RUNNING CLEARANCE, STIFF RINGS, SEIZING EXH VALVE, OUT OF FUEL U SAY IT HAS PLENTY OF FUEL, DOES IT HAVE SPARK?? AS SOON AS IT...