2000 7.3 I seriously doubt any one can fix this POS

[KingKolbalt]

Ok, I bought an a 2000 7.3 5spd a few months ago to drive back and forth from the rig, an about 1100 miles round trip. It ran fine the first trip out there and back I had no problems what so ever. so when I got back I installed a 100 ga slip tank that is gravity fed and again made the trip without a hitch. Then I headed back to the rig cruise set at 75, rpms around 2300 I guess. I got almost halfway there when all of suddenly the cruise kicks out and it sounds like it missing but its not running rough or anything. Id put my foot to the floor and it was still loosing speed at 50mph. So I pull over and let it sit for a minute or two. Started it back up and it ran fine for a little while. then it started doing the same thing again a few miles up the road only this time it started steadily blowing white smoke. after that i had it towed to a shop where they replaced all 8 injectors. It ran like a champ for a couple hundred miles then it started doing the same thing again. so i limped it home and took it to the ford house where they replaced the lift pump and sensor on the exhaust. got it back and like before it ran great for a couple hundred miles and then it does the same thing. only now I think its getting worse the distances in-between where it messes up are getting shorter and more intense. I'm at my whits end with this truck. The entire fuel system in damn near brand new the heiu pump was changed not to long ago by the previous owner. its only got 150,000 and now its stuck 400 miles away and i don't think my half ton will pull it.

[jesilvas]

There's no sensor on the exhaust. Find a new mechanic.
Idk why you bought a diesel for long drives like that but ok. Sounds like a 4.10 rear diff too which sucks.
Was that a new aux. tank?
Was there a filter before the diesel got into the tank
Where did you get fuel from to fill it with 100gals?
When was the last fuel filter change?
How about the last water separator drain?
It's just too much of a coincidence this happened so shortly after the new tank setup.
I'd almost go ahead and drop the stock tank and clean it out.