2002 f350 super duty 5.4 triton
When the truck is in idle it runs fine, once its
under load if I try to give it gas it bogs down
and almost stalls, backfires a bit if I try to
force it. I can drive it and it does have a little
power each fresh start but it is steadily
getting worse. At first it was only happening
up hills and such. I've replaced fuel filter and
it is not reading any codes.