Well if it wont even start with ether that could be a spark problem. I would check that first. A few years ago a similar problem happened to me, and a new coil cured the problem. Be sure to check the timing also. It is also possable that the engine is getting flooded due to a problem in the fuel system. I had a blockage in the return line that caused mine to start flooding a few years back. Just some ideas. Hope this helps. Andrew 4194