NO spark question

One more for the back of your mind.

Coil wires can burn their core down through the center of the wire so far the spark won't jump that gap any longer.
You should see a short section of the core bent over and crimped under the metal end.
If you see nothing but a black hole down the center of the wire, then the core is probably burned away. (mostly a reference to coil wires, but it can happen to plug wires also)