Impala V6-3.9L (2007)
Fuel Pressure Release: Service and Repair
Fuel Pressure Relief
Fuel Pressure Relief
Tools Required
CH-48027 Digital Pressure Gage
1. Disconnect the negative battery cable.
2. Loosen the fuel fill cap in order to relieve the fuel tank vapor pressure.
3. Install the CH-48027.
4. Once the system pressure is completely relieved, remove the CH-48027. Refer to Fuel Pressure Gage Installation and Removal. See: Tune-up and
Engine Performance Checks/Fuel Pressure/Testing and Inspection/Fuel Pressure Gage Installation and Removal
5. Tighten the fuel fill cap.
