2004 F350 Diesel. Yes it is the 6 Liter. This farm truck has stalled on me 3 times in the past 2 weeks when I drive up to a gate to open it. Yes different gates. I have g=had the internal high pressure oil pump replaced about 8,000 miles ago, EGR bypass about 6,000 miles ago and replaced all the fuel filters in December. If I leave it sit for about 10 minutes it will crank and run. Seems like it runs out of fuel. Is there a fuel pump in the diesel tank and could that have something to do with it?? Thanks!