Fuel System Air Leak Testing: Notes
WARNING: This page is about a different car, the 1995 Ford RV Cutaway, 1995 Ford Econoline, 1995 Ford Cutaway, and 1995 Ford Club Wagon. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Before starting this test procedure, verify that the fuel tank(s) contain at least a half tank of fuel. The fuel level compensates for the range of vehicle attitudes that may uncover the fuel sender pick-up hose or sender by-pass in the fuel tank when the fuel level is low. Visually inspect fuel system for obvious problems such as kinked hoses, damaged lines or damaged push-connect fittings. Make necessary repairs before continuing.
CAUTION:
Use care when removing or installing hose to the plastic fitting at the fuel injection nozzle return lines. Lubricate hose with diesel fuel to ease installation.