Edit: Welcome to TCCA.
^ + 1 on Chartmakers nice post.
Try spritzing just the coil pack & see what happens. If no joy, I suppose you could have damaged a wire or plug during installation, or maybe got a bad new wire or plug. I had a similar problem on my then new 99 Ranger, Dealer did a wet down test & found the #6 plug external insulator cracked!!!!
If you'll do the wetdown test at night, it'll show problem areas we can't see in daylight.
You don't want to put this off, as the misfire is dumping raw fuel into the cat converter, which will cuse it to overheat & shorten it's life.
Some autoparts stores can bench test the coilpack at no cost, if your still in doubt about it.
For sure get the PCV
elbo with the hole in it fixed, as it's letting the engine breath in unfiltered & unmetered air & is corrupting the air/fuel mixture & KAM
fuel trim tables, so you may want to remove the battery B- cable when beginning the repair, to wipe the computers KAM
, so it can begin building new fuel trim tables & since a unmetered vacuum leak will also corrupt the KAM's idle strategy, perhaps take the time to go through the cold & warm idle relearn routine, to prevent possible driveability problems.
More thoughts for consideration, let us know what you find.