Seems like it's chasing that one wire, could be cap or coil.
I'd get new plugs anyways, to see where your jetting is at,
Also again a compression test, never hurts to check.
Get a clymers manual, they're $30.00, and sooner or later (probably sooner), you're going to need it.
electrical:
http://www.dfn.com/benkaren/elecfaq.html
jetting
http://www.dfn.com/benkaren/jetfaq.html