Fuel System Pressure Test

A fuel system pressure test is part of several of the diagnostic charts and symptom checks. To perform this test, follow this procedure:

1. Turn engine "OFF" and relieve fuel pressure following above 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 400-440 kPa (58-64 psi). If not, refer to Computers and Control Systems / System Diagnosis / Chart A-6. Testing and Inspection
5. Turn engine "OFF" and relieve fuel pressure 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.