Only starts in choke position - high revs and fluctuating - governor is going back and forth. Will not run slow or idle properly. Was using it 2 days ago until it quit - I was using it pretty hard with a dethatching blade. I thought it overheated and left it alone . Today finally got it going, it would only run for about 2 seconds and die - lots of smoke, burning oil but did not tip leting oil in cylinder. Seems like its slowly coming around but still runs like explained at top. Sorry I've mixed up the time line, but at first it ran just fine

More than likely some crud in either the gas tank, filter or carb, it is starving for fuel.

What color is smoke.