A buddy's dad uses this saw with us cutting firewood. Had a new coil a couple years ago, saw was running good last season. Went to use it this year, saw fired, ran maybe 10 seconds, and quit. Messed with it last night, same deal. ran 5 or six seconds, quit and wouldn't restart. Acts like it has weak spark. He has a fancy light up tester, shows light when grounded direct, but not through the plug. New plug, no difference. Even tried one out of my 034S just for a laugh, same deal. I don't think it's a carb problem, a little shot of ether won't even make it fire. Compression is about 125. Coil has a ground wire and nothing else, no points, and the trigger must be built into the coil. Any bright ideas?? Are we looking for another coil? Is it still available? Doesn't want to park the saw, it looks good and ran great last year. He just put a new bar on it, and has about 5 new chains in stock to match.