Had to replace injector pump on my F-250 last year, While doing that, I installed Racor water seperator as well. Since that repair, motor runs good, but when I first start it in morning, she fires rite up but only runs for 5 to 10 seconds then dies. After cranking about 10 to 15 seconds she fires back up and runs ok. I figure its loosing fuel pressure some where over the night. Any thoughts as to exactly where I should be checking for pressure loss or other problems?