Ok back to this old problem. This one I sold a few weeks ago and it was running fine. The woman assures me that they have not straight fueled it but it has all the symptons except that the spark plug looks as I would have expected, not the light brown/dry that usually indicates no oil. Spark is good, tried several plugs, compression good everything seems as it should. What baffles me is that even with a squirt of starter fluid in the plug hole it doesn't give the slightest hint of wanting to fire. This is exactly what I get from a motor I know has been straight fueled. Any thoughts?