My 1996 N/A 850 has been giving me some problems recently. Occasionally, it will refuse to start. I twist the key and crank the engine, but it does not start. It stumbles sometimes and almost gets going, but then dies. Then all of a sudden it will start without a problem a few minutes later. I also had it idle irradically once. It got the check engine light and pulled 2 codes. It told me misfire in cylinder #3 and multiple cylinder misfires. Any clues to what it might be? Cap, rotors, wires, sensors, relays, etc?