has anyone had a problem with with spark plugs misfiring? we have changed plugs, wires, fuel injectors, coil pack, and fuel and nothing seems to fix the problem. 06 ranger v-6 3.0 with 93000 miles

Have you checked the timing. Mine had 100k miles and did the same thing. Timing had jumped enough so it would run but would misfire, miss, sometimes backfire. New timing parts fixed the little 3.0. Not a big expense, did the work myself.

what are the codes you are getting, how does the truck run? have you done a fuel pressure test?

i put some sea foam and it stop for 2 month

mis fire cyl 4