95 Miata - intermitent misfire
 

My 95 Miata suffers from intermittent misfire or hesitation. It will suddenly feel like it is running on 3 cylinders, then suddenly start to run fine. I have replaced plugs, plug wi9res, air filter and fuel filter. A local mechanic says it is the coil pack, but can't guarantee that that will solve the problem. Any members have thoughts or similar problems? Thanks!