have a international 4700 with a 7.3. having a problem keeping it running after i drive it about a quarter mile, looses power and then quits. it will restart with diffulity. will idle ok but when under power the engine knocks and quits. i thought i had water in fuel and drained half tank and put new diesel in and still same problem. next i want to change fuel filter but i never changed one. any help out there would be apprecited. or any other thoughts?