Did you use Platinum plugs? Swap the coil pack from cylinder #1 to a different cylinder and see if the problem moves to that cylinder. If not, then move the injector and see if the problem moves to that cylinder. If the problem is still at cylinder #1 you can do a quick compression test. If everything still checks out you might be looking at a CKP. All in all, a pretty common problem with WJ's. Good luck.
PSA - It would be nice if people made an attempt while typing to discuss their problems or opinions instead of one long sentence with no punctuation. Maybe I'm cynical, but that really pisses me off. Rant over.
"It's like saying I had a car I got that was painted by the previous owner. I had an accident so painting a car is unsafe." - cykaaro