I've got a 97 F250 4x4 7.3. It came from a grass farm where it sat most of the time for several years. It would run for a few miles then die out like running out of fuel on front tank. My neighbor put new CPS, fuel filter, two new glow plugs, new sending units in tanks, new fuel pump and blew lines out with compressed air. It runs much better and doesn't die but on hard acceleration it misses just a little, like a bad spark plug wire on a gas engine. I don't think he drained all the old farm diesel out as the rear gauge still reads way over full. BTW fuel gauge still doesn't read accurately. Thanks for any advice you can give.