So a buddy of mine has a 2003 6.0 this is the second HPOP he has put in. The first lasted a month the second lasted 4 days. He has replaced them with pumps from NAPA. He has done the cooler, ICP, IPR. The thing reaks of diesel but theres nothing dripping on the ground. He had it running fine then he turned it off 20 minutes later it would not start. It was starting and running fine for the four days it was going. Any ideas??