Injector Replacement

Relieve fuel pressure (see FUEL PRESSURE RELIEVING ).
Remove the engine cover.
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)
Courtesy 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)
Courtesy 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)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Disconnect the quick-connect fittings (C).
Remove the fuel rail mounting nuts (D) from the fuel rail (E).
Remove the injector clip (F) from the injector (G).
Remove the injector from the fuel rail.
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)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

K20A3 engine-2002-2004 models

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

K20A3 engine-2005-2006 models

Fig 6: Installing O-Rings (K20A3 Engine-2005-2006 Models)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Install the injector clip (D).
Coat the injector O-ring (E) with clean engine oil.
To prevent damage to the O-ring, install the injectors in the fuel rail first, then install them in the injector base (F).
Install the fuel rail mounting nuts.
Connect the connectors on the injectors, and install the harness holder.
Connect the quick-connect fittings.
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.
Install the engine cover.