Download Fuel Injector Service Manual 94 Ford F 250 2WD Pickup – REMOVAL & INSTALLATION 1. Disconnect nozzle fuel inlet (high pressure) and fuel leak-off tees from each nozzle assembly and position out of the way. Cover open ends of fuel inlet lines and nozzles to prevent entry of dirt with fuel system protective cap set. 2. Remove fuel leak-off lines as an assembly. a. Remove pump to fuel return tube hose at fuel return elbow cap elbow at pump. disconnect hose (from leak-off tee of fuel filter) at leak-off tee. b. Loosen two fuel return tube retaining clamps, one at intake manifold and one at engine lifting eye. Remove fuel return hose clamp at CDR valve bracket. c. With clamps removed, remove return lines and tees as an assembly by lifting tees off nozzles. 3. Remove injection nozzles by turning counterclockwise. Pull nozzle assembly with copper washer from engine. Be careful not to strike nozzle tip against any hard surface during removal. Cover nozzle assembly fuel inlet opening and nozzle tip with plastic cap to prevent entry of dirt. NOTE: Remove copper injector nozzle gasket from nozzle bore with O-Ring tool T71P-19703-C or equivalent if not attached to the nozzle tip.