Fuel Pressure: Testing and Inspection

Fuel Supply System - Components, Hoses, And Lines:

CENTRAL MULTIPORT FUEL INJECTION SYSTEM PRESSURE TEST
A fuel system pressure test is part of several of the diagnostic charts and symptom checks.
To perform this test, use the following procedure:

1. Turn the engine "OFF" and relieve fuel pressure following approved procedure.
2. Connect fuel pressure gage to fuel pressure connection tap. Wrap a shop towel around fitting while connecting gage to avoid spillage.
3. Connect negative battery terminal.
4. Start engine and observe fuel pressure reading. It should be 380-420 kPa (55-61 psi).
5. Turn engine "OFF" and relieve fuel pressure following above procedure.
6. Remove fuel pressure gage.
7. Reinstall fuel pressure connection cap.
8. Reconnect negative battery terminal.
9. Start engine and check for fuel leaks.