I read time and time agiain about the use of statrting fluiid. I would use caution with its use. I have seen lots of damage on engines especially the top ends and actually destroyed engines by liberal use of the stuff. I have ruined 1 in my day-that was enough for me I used to make my living as an Aircraft Mechanic ( I have and A& P liicense) and have seen plenty of destroyed engines I also used to sell parts to PennDot garages and there the guys would use cases of starting fluid to start everything. The aircooled engines suffered the worst, lawn mowers and the bigger twin cylinders on garden tractors would seize up. Remember the ether is a solvent and washes away any top end lubrication and especially the cyclinder walls. On a fresh rebuild lots of lubrication is wanted on the cylinder walls and the starting fluid just washes it away. I have seen guys try to keep the engine running on starting fliud and just squirt away into the intake as the engine revs along. Makes me shutter! I wouldn't say a little squirt will hurt, but remember that starting fluid was meant to be an aid to starting a below zero temps when gasoline doesn't want to vaporize. If the engine will not start and run something isn't right, remember that fuel fire and compression make the engine run if it is right the starting fliud is just a cover up,find and fix the problem. I personally think that the starting fluid causes alot of unessecary engine wear, I know when I get frustruated I want to reach for starting fuild but I haven't had any in my shop for years, just to avoid the temptation.