How do you change the fuel filter on a 2004 Ford F350 diesel?
If I am correct, on the driver's side frame, almost right where
the cab meets the front fender, you will see a bundle of plastic
and steel pipes. They meet at a square box with an end that looks
like the bottom of an oil filter. Use the right size socket on the
hex like nut on that side of the filter and turn counterclockwise.
Get a rag or a small bucket to pick up the diesel comming out.
Remove the filtering elemnet and install the new one. Reverse
procedure to install.