Originally Posted by Lazarus Truck
Possible fuel pressure issue, maybe ckps, or a clogged cat. Some of these will idle well, but crap at load. A mis-fire at the #2 cyl may be ignition, but probably fuel-delivery. Please check fuel pressure before spending any more $.
I agree. Mis-fire is more accurately described as mis-detonation. It's not always necessarily the plug and/or wire. A bad injector can supply an inadequate fuel spray/supply and result in mis-detonation.
(Think of it as a butane lighter and a can of starting fluid. The butane lighter being the spark-plug, and the starting fluid being the fuel supply. No butane lighter...no fireball. No starting fluid...no fireball. Need to have them both working properly.)
I was just waiting to see if the OP got back with the results of the wire check before proceeding.