Idi93
Ford parts guy
I have a 92' CC 7.3 NA 4x4 5spd w/4.10s. I have put a new return line setup(had leaks), known good injectors w/30K on them(massive white smoke on startup and what sounded like an injector knock), tested glow plugs(all .4-.5 Ohms), good GPC. All of that is good, except it still has a slight tapping sound when revving up, and it starts blowing black smoke when accelerating with more than a quarter throttle. BTW, truck has 180,000 miles, the IP has been replaced in the past, dont know mileage on it though. Also, previous owner removed the timing sensor on injector #1. I replaced that injector line and sensor with a good spare off my other truck. Sorry for the novel, but i figured i couldnt have too much info for yall.