Fuel Pressure: Testing and Inspection

Fuel System Pressure Test

Special Tool(s)






General Procedure

WARNING: Do not smoke, carry lighted tobacco or have an open flame of any type when working on or near any fuel-related component. Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions may result in serious personal injury.

WARNING: Do not carry personal electronic devices such as cell phones, pagers or audio equipment of any type when working on or near any fuel-related component. Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions may result in serious personal injury.

WARNING: Before working on or disconnecting any of the fuel tubes or fuel system components, relieve the fuel system pressure to prevent accidental spraying of fuel. Fuel in the fuel system remains under high pressure, even when the engine is not running. Failure to follow this instruction may result in serious personal injury.

WARNING: Always disconnect the battery ground cable at the battery when working on an EVAP (Evaporative Emission) system or fuel-related component. Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions may result in serious personal injury.

WARNING: When handling fuel, always observe fuel handling precautions and be prepared in the event of fuel spillage. Spilled fuel may be ignited by hot vehicle components or other ignition sources. Failure to follow these instructions may result in serious personal injury.

1. Release the fuel system pressure. REFER to Fuel System Pressure Release .

2. Disconnect the battery ground cable. REFER to Battery Disconnect .

3. Disconnect the fuel tube-to-fuel jumper tube quick connect coupling. REFER to Quick Connect Coupling .

4. Install the Fuel Pressure Test Adapter and the Fuel Pressure Test Kit between the fuel tube and the fuel jumper tube.





5. NOTE: The FP (Fuel Pump) relay was previously removed to release the fuel system pressure and must be installed to test the fuel system pressure.
Install the FP (Fuel Pump) relay.

6. Connect the battery ground cable. REFER to Battery Disconnect .

7. NOTE: Carry out a ignition ON engine OFF visual inspection for fuel leaks prior to completing the fuel system pressure test.

NOTE: After completing the fuel system pressure test, open the drain valve on the Fuel Pressure Test Kit and release any residual fuel into a suitable container prior to removing the tool.
Test the fuel system pressure to make sure it is within the specified range. REFER to General Specifications .