Motor has sat for 3 years, ran fine when pulled. Was locked up 3 days ago, finally got it to turn and running yesterday. Ran and idled for maybe 15 min, then went and did a few laps around my storage unit parking lot and a few donuts. After the donuts it died and would not start again, ran great for the time being. Ran maybe a totale of 25 mins. Today I added 5 more gallons to the tank to make sure I had fuel, reprimed it, got it to start by flooring it and cranking about 15 secs. Will run for about 5 sec then die. Then nothing again, have to reprime and it does the same thing 5 secs then dead. Questions: Air getting in the system somewhere? I know my return lines are leaking at the injectors, could that cause a problem? Ordered new return lines today. Plan on changing the fuel pump and replace all rubber lines this weekend. Could the injectors or injector pump be fubar from sitting so long?