Recently changed my fuel filter on my 1993 Ford f250 7.3 n/a all stock filled it with ps/atf/seafoam turn it on few minutes left over night ran it next day but it stumbled the whole time about the fuel filter light stays on fresh fuel still had a little old fuel but figured 15 fresh gallon would of worked the old out. At a loss here n my fuel filter choice was a 33617 no bowl style even set a spare one on a well still same result no matter what tank any advice will be appreciated