So as I continue to get a damn misfire on cylinder 2 on my 4.7 I'm troubleshooting the hell out of it, and I'm considering it to possibly be an injector OR a lifter. The facts:

-changed all my plugs 1k ago with OEM champions and then the misfire occurred
-swapped my coil packs from cylinder 3 to 2 and the misfire stayed with cylinder 2
-swapped the plug from cylinder 4 to cylinder 2 and misfire still occurred on cylinder 2
-the previous was just as bad as the other 7 so now reason to believe it's an injector yet
-Seafoamed through the brake booster line twice mass amounts of carbon dispersed and still have a misfire
-Seafoam in the tank with premium fuel helped alittle but the misfire came back

It's real apparent and happens when she's in OD and her RPMs are under 1800 and she's lugging it. If I knock it down to 5th gear she smoothes out and runs normal. But in OD lugging it she gets alittle rough and jumpy. Thoughts on this? I'd hate to get rid of her over this as it's really pissing me off. She has a misfire over the summer on cylinder 1 but I solved that with a couple seafoam treatments.