The reason ether (starting fluid) is bad to use is because it dries on everything...I don't know if you have noticed when you spray a little on the ground, it dries very quickly? 2 strokes NEED premix or injected oil in their cylinder...&since ether is a drying agent, thats definitely NOT GOOD. Its also known to put a wear spot on the top of your piston...I actually did it purposely to a motor i had laying around...Since I couldn't find a clutch to fit it, I decided I just wanted to blow the motor, but I did it with a bottle of starting fluid....After running and starting it off of the ether, it showed some wear on the top of the piston...It eventually blew up and the rings seized....I wish I still had pics of the damn piston that came out of it....Hope this has taught ya something on starting fluid...