got a 2006 super duty 6.0 powerstroke, down on the coast fishing 4 weeks ago and while going thru sand n 4x4 the truck cutoff and want crank like its getting on fuel..i give it a shot of wd40 in intake and it cranks up..iget home once i get there i turn it off it cranks rite back up and does fine til now...im checking cows in2x4 and when i slow to turn in driveway it cuts off and want crank bac up, again it act like its getting no fuel,