WHAT IS THE PURPOSE OF THE MERCURY SWITCH THAT ATTACHES TO THE SWITCH BOX?<br /><br />ENGINE SEEMS TO HAVE A BAD MISS AT IDLE. WHEN I PULLED OFF THE #1 PLUG WIRE THE ENGINE SPEEDED UP INSTEAD OF MISSING MORE ? GOT ANY IDEAS ON THIS MISS ? <br /><br />SPARK AT PLUG SEEMS WEAK? SHOULD I...
