Fuel Delivery and Air Induction: Service and Repair

1. Relieve the system pressure, Refer to MAINTENANCE PROCEDURES/FUEL SYSTEM PRESSURE RELIEF.
2. Disconnect the fuel supply line at the inlet of the fuel rail.
3. Attach the fuel supply line to the return line.
4. Plug the fuel return fitting at the fuel rail or connect to Tester/Cleaner depending on configuration.
5. Connect the fuel supply hose from the Tester/Cleaner to the fuel supply rail.
6. Turn the Tester/Cleaner ON. (Tester/Cleaner should run 10 minutes)
7. START the engine and check the fuel lines for leakage. If there is any sign of leakage, turn the vehicle and the Tester/Cleaner OFF, and repair the location where fuel is leaking. Then, return to Step 6.
8. When the engine speed has stabilized, set the idle speed at 2000 rpm. Run the remainder of the 10 minute cycle to eliminate all the air in the fuel supply hose and fuel rail.
9. Turn power switch OFF, and disconnect power lines.
10. Disconnect cleaner supply hose from the fuel supply rail.
11. Lubricate O-rings with fuel prior to installation, and ensure fuel lines are securely connected. Reconnect vehicle fuel lines. START and RUN engine, check fuel lines for leaks.