Well, I misted the coils and wires around the plug areas and fired it up. Didn't notice any arcing. So I misted some more, and it started running bad with the check engine light blinking.
Didn't get a chance to pull and look at plugs, but it seems pretty obvious that the problem is in the neighborhood of the plugs, wires, or ICM. I'd like to think that it isn't the plugs because they only have 30k miles on them, and they are AC Delco.
If I go and grease everything, is it kosher to grease the plate where the coils connect?
Should I just replace the plate and coils?