2005 Acura RSX Base, StandardFACTORY OEM SERVICE PROCEDURE

Injector Replacement

  1. Relieve fuel pressure (see FUEL PRESSURE RELIEVING ).
  2. Remove the engine cover.
  3. Disconnect the connectors from the injectors (A), and remove the harness holder (B).

    K20A2/K20Z1 engines 

    Fig 1: Disconnecting Connectors From Injectors And Torque Specifications (K20A2/K20Z1 Engines)
    G03650892Courtesy of AMERICAN HONDA MOTOR CO., INC.

    K20A3 engine-2002-2004 models 

    Fig 2: Disconnecting Connectors From Injectors And Torque Specifications (K20A3 Engine-2002-2004 Models)
    G03650893Courtesy of AMERICAN HONDA MOTOR CO., INC.

    K20A3 engine-2005-2006 models 

    Fig 3: Disconnecting Connectors From Injectors And Torque Specifications (K20A3 Engine-2005-2006 Models)
    G03650894Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. Disconnect the quick-connect fittings (C).
  5. Remove the fuel rail mounting nuts (D) from the fuel rail (E).
  6. Remove the injector clip (F) from the injector (G).
  7. Remove the injector from the fuel rail.
  8. Coat the new O-rings (A) with clean engine oil, and insert the injectors (B) into the fuel rail (C).

    K20A2/K20Z1 engines 

    Fig 4: Installing O-Rings (K20A2/K20Z1 Engines)
    G03650895Courtesy of AMERICAN HONDA MOTOR CO., INC.

    K20A3 engine-2002-2004 models 

    Fig 5: Installing O-Rings (K20A3 Engine-2002-2004 Models)
    G03650896Courtesy of AMERICAN HONDA MOTOR CO., INC.

    K20A3 engine-2005-2006 models 

    Fig 6: Installing O-Rings (K20A3 Engine-2005-2006 Models)
    G03650897Courtesy of AMERICAN HONDA MOTOR CO., INC.
  9. Install the injector clip (D).
  10. Coat the injector O-ring (E) with clean engine oil.
  11. To prevent damage to the O-ring, install the injectors in the fuel rail first, then install them in the injector base (F).
  12. Install the fuel rail mounting nuts.
  13. Connect the connectors on the injectors, and install the harness holder.
  14. Connect the quick-connect fittings.
  15. Turn the ignition switch ON (II), but do not operate the starter. After the fuel pump runs for approximately 2 seconds, the fuel pressure in the fuel line rises. Repeat this two or three times, then check for fuel leakage.
  16. Install the engine cover.
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.