Fuel System Pressure Release

SPECIAL TOOL SPECIFICATIONS

Fuel Pressure Gauge 310-012 (T80L-9974-B)

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.

WARNING: Fuel in the fuel system remains under high pressure even when the engine is not running. Before repairing 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. Disconnect the battery ground cable. For additional information, refer to BATTERY, MOUNTING AND CABLES .
NOTE: 3.0L shown, others similar.
Fig 1: Removing Schrader Valve Cap
Courtesy of FORD MOTOR CO.
2. Remove the Schrader valve cap and attach the Fuel Pressure Gauge.
NOTE: Open the manual valve slowly to relieve the system pressure. This may drain fuel from the system. Place fuel in a suitable container.
3. Open the manual valve on the Fuel Pressure Gauge and relieve the fuel pressure.
   • This will drain some fuel out of the system. Place fuel in a suitable container.
     Fig 2: Identifying Fuel Pressure Gauge Position

     Courtesy of FORD MOTOR CO.