Expedition 4WD V8-4.6L SOHC VIN W (1999)
Fuel Pressure Release: Service and Repair
EFI/CFI Fuel Pressure Gauge
SPECIAL SERVICE TOOLS
REMOVAL
WARNING
-
DO NOT SMOKE OR CARRY LIGHTED TOBACCO OR OPEN FLAME OF ANY TYPE WHEN WORKING ON OR NEAR ANY
FUEL RELATED COMPONENT. HIGHLY FLAMMABLE MIXTURES ARE ALWAYS PRESENT AND MAY BE IGNITED,
RESULTING IN POSSIBLE PERSONAL INJURY.
-
FUEL IN THE FUEL SYSTEM REMAINS UNDER HIGH PRESSURE EVEN WHEN THE ENGINE IS NOT RUNNING. BEFORE
SERVICING OR DISCONNECTING ANY OF THE FUEL LINES OR FUEL SYSTEM COMPONENTS, THE FUEL SYSTEM
PRESSURE MUST BE RELIEVED TO PREVENT ACCIDENTAL SPRAYING OF FUEL, CAUSING PERSONAL INJURY OR A
FIRE HAZARD.
1. Remove the schrader valve cap and install the EFI/CFI Fuel Pressure Gauge.
2. Open the manual valve slowly on the EFI/CFI Fuel Pressure Gauge and relieve the fuel pressure.
