I searched old threads and think I tried every suggestion. This is my spare FS80 and it is 3 years old. My main FS80 still runs good. The ignition coil is probably the problem in my opinion, but here is what has been done so far: New carb, fuel hoses, fuel filter, and tank grommets last March. New fuel cap, air filter, and two new plugs today (in case the first might have been bad out of the box). Took muffler off. Port is clear. Bore looks near perfect. Machining marks still visible and even (no evidence of slap) on all of the piston skirt that can be seen. Top of piston looks good. Rings look good. The cord is still as hard to pull as my main FS-80, so am assuming it has good compression. It is getting fuel because you can see the mist shoot out (muffler off) in the sunlight when pulling the cord. But it will not start today. Used it a few days ago just to run some fuel through it and it had plenty of power. But it has been getting harder to start as the season wore on. My question is this: When I take the coil in to the dealer do they have an instrument or machine to check it with, or will it be just my word that it is probably bad?