Hi y'all, im a new member here and already right off the bat have a question. I have seen threads asking similar questions but none have helped me so I am going to post my own. I have a 1986 f250 6.9l 4spd manual, picked this truck up running and driving made it 350 miles no problem for only $600. With $80 worth of copper in the bed, new sound system and new tires, RUNNING i figured it was to good of a deal. Well a couple thousand miles later I am hitting my first problem. Drove to Nevada,TX to san antonio a couple times this week. After the first trip i had a very rough idle for only the day after than ran fine for 3 days. On the way back on the second trip after running about 200 miles I stopped for a drink, started with a very rough idle, ran on as I got up to speed, slowed down and it started sputtering very hard. Thought I may be low on gas ( gauge doesn't work) switching to my reserve didn't fix the problem however, as soon as I hit the shoulder it died out. Was cranking fine but no start then got to the point it would barely crank at all. This is the only information I have, the injection lines all have gas line wrapped around them almost as if there is a hole could I be getting air in the lines there? Lift pump?