The 7.3 Powerchoke (as opposed to the 444 Navistar it was based on) had no way to get air out of the rails other than pumping it into the cylinders viathe injectors. Can you say "cackle, knock, stumble"?
IMHO, if there was a tiny bit of air in there it'd have less trouble. There is no shock reservoir to handle the intermittent nature of fuel flow. Aka water hammer. The 444's pipe off the far end is itself probably a shock absorber. Stupid Ford, save $2 by taking it off... -- Jim
