Engine misfire.

I own a 1998 F-150 with a 4.2 engine, I have a misfire on cyl.5 & 6 , and lean mix code. but there is fuel coming out of the exhuast pipe.? I replaced the coil pack . And i dont know where to go from here. Please help. Thank you

I had a similar issue with my 94 Thunderbird. I checked coil packs, plugs, plug wires, injectors, potential vacuum leaks, and compression and found no problems. I finally replaced the computer and it fixed the problem. Apparently the injectors were not firing correctly.