G8 V8-6.0L (2009)
Fuel Pressure Release: Service and Repair
Fuel Pressure Relief
Fuel Pressure Relief
Tools Required
*
J 29658-D Fuel Pressure Gage
*
AU-453 Fuel Pressure Test Hose Adapter
Warning
Gasoline or gasoline vapors are highly flammable. A fire could occur if an ignition source is present. Never drain or store gasoline or diesel fuel in an
open container, due to the possibility of fire or explosion. Have a dry chemical (Class B) fire extinguisher nearby.
Warning
Relieve the fuel system pressure before servicing fuel system components in order to reduce the risk of fire and personal injury.
After relieving the system pressure, a small amount of fuel may be released when servicing the fuel lines or connections. In order to reduce the chance of
personal injury, cover the regulator and the fuel line fittings with a shop towel before disconnecting. This will catch any fuel that may leak out. Place the
towel in an approved container when the disconnection is complete.
Warning: Refer to Safety Glasses Warning (See: Service Precautions/Technician Safety Information/Safety Glasses Warning).
1. Turn the ignition OFF.
2. Disconnect the negative battery cable in order to avoid possible fuel discharge if an accidental attempt is made to start the engine. Refer to Battery
Negative Cable Disconnection and Connection (See: Starting and Charging/Battery/Battery Cable/Service and Repair).
3. Remove the fuel injector sight shield.
4. Connect the EN-47620 (1) fuel pressure test hose adapter to the fuel pressure connection. Wrap a shop towel around the fitting while connecting
