Hooked on phonics should clear up the studdering just fine.
Sorry, Little levity for the situation.


If you have a set of plastic pliers or insulated pliers
pull 1 plug wire at a time while it's idling. If you find one that
doesn't change the idle when it's pulled that
would be the one causing the problem if
your having an ignition problem. It's not a cure-all test, but
it may isolate a bad plug / plug wire or dist. cap. ALso, check plugs / cap / rotor for carbon tracking. Just a thought.