2007 Acura RDXFACTORY OEM SERVICE PROCEDURE

Injector Replacement

  1. Relieve fuel pressure (see FUEL PRESSURE RELIEVING ).
  2. Remove the charge air cooler (see CHARGE AIR COOLER REMOVAL AND INSTALLATION ).
  3. Disconnect the throttle body 6P connector, then remove the injector cover (A).
  4. Disconnect the connectors (B) from the injectors, then remove the harness holder (C) from the fuel rail (D).
    Fig 1: Identifying Injector Cover, Injectors, Throttle Body 6P Connector And Fuel Rail
    G05444641Courtesy of AMERICAN HONDA MOTOR CO., INC.
  5. Disconnect the quick-connect fitting (E).
  6. Remove the fuel rail mounting nuts (F), then remove the fuel rail.
  7. Remove the injector clips (G) from the injectors.
  8. Remove the injectors from the fuel rail.
  9. Coat the new O-rings (black) (A) with clean engine oil, then insert the injectors (B) into the fuel rail (C).
    Fig 2: Identifying Injector O-Rings
    G05444642Courtesy of AMERICAN HONDA MOTOR CO., INC.
  10. Install the injector clips (D).
  11. Coat the new O-rings (green) (E) with clean engine oil, then install the fuel rail and injectors in the injector base (F).
  12. Install the fuel rail mounting nuts (G).
  13. Connect the connectors on the injectors, and install the harness holder on the fuel rail.
  14. Connect the quick-connect fitting.
  15. Turn the ignition switch ON (II), but do not operate the starter. After the fuel pump runs for about 2 seconds, the fuel rail will be pressurized. Repeat this two or three times, then check for fuel leakage.
  16. Reinstall the injector cover, and connect the throttle body 6P connector.
  17. Reinstall the charge air cooler (see INSTALLATION ).
  18. Clear any stored DTCs with the HDS.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.