I ran out of gas last weekend so I pulled it into the shed with my 4 wheeler and just left it.Today I put new gas in it and it started right up.I let it warm up about 10 minutes before I got on it.I put it in gear and started to drive it but after about 20 yards it started to die.I opened the throdle up to try to keep it running and then it started popping back through the carb.When it died some smoke came out the air stack.I let it sit for a few minutes before I tried to start it again.I hand cranked it and it started right up.I backed it up into the shed and let it run for about 10 minutes before I shut it off.It ran fine after a restarted it.It ran fine before I ran it out of gas.It has a rebuilt carb,new wires,points ,plugs and condencer.Im wondering if i got some water in the new gas.The tank was empty because i shined a flashlight in it to check it out before i put the new gas in.Any ideas? Bad gas or maybe spark jumping in the mag?