I would de-pressureize it if I was doing it. Its not going to hurt anything. Just when you get it done. Turn the key on and off a few times letting the fuel pump cycle on and off to rebuild pressure and fill the filter.
__________________
1990 GT, 347, TFS TW Heads, TFS Cam, TFS Track heat, Twin turbos, FMIC, T5.
Built Ford Tough Moderator
|