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HOMESERVICE MANUALSHONDA2008CIVIC SI, 4D SEDANREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 85 (PGM-FI SYSTEM (R18A1 ENGINE))INJECTOR REPLACEMENT
2008 Honda Civic Si, 4D Sedan

Injector Replacement

2008 Honda Civic Si, 4D SedanSECTION Injector Replacement
WARNING: This page is about a different variant/trim than selected.
  1. Relieve the fuel pressure (see FUEL PRESSURE RELIEVING ).
  2. Remove the cowl cover and the under-cowl panel (see COWL COVER REPLACEMENT ).
  3. Remove the fuel line cover (A).
    Fig 1: Identifying Fuel Line Cover, Injector Connectors And Rocker Arm Oil Control Valve Connector
    G06273091Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. Disconnect the injector connectors (B) from the injectors and the rocker arm oil control valve connector (C).
  5. Disconnect the quick-connect fitting (D).
  6. Remove the fuel rail mounting nuts (E) from the fuel rail (F).
  7. Remove the injector clips (G) from the injectors.
  8. Remove the injectors from the fuel rail.
  9. Coat the new O-rings (A) with clean engine oil, and insert the injectors (B) into the fuel rail (C).
    Fig 2: Identifying O-Rings, Injectors And Fuel Rail
    G06273092Courtesy of AMERICAN HONDA MOTOR CO., INC.
  10. Install the injector clips (D).
  11. Coat the new injector O-rings (E) with clean engine oil.
  12. Install the fuel rail and the injectors into the cylinder head (F).
  13. Install the fuel rail mounting nuts.
  14. Connect the connectors on the injectors.
  15. Connect the quick-connect fittings.
  16. Turn the ignition switch to ON (II), but do not operate the starter. After the fuel pump runs for about 2 seconds, the fuel rail is pressurized. Repeat this two or three times, then check for fuel leakage.
  17. Install the fuel line cover.
  18. Install the cowl cover and the under-cowl panel (see COWL COVER REPLACEMENT ).
RENDER: 1.0x

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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.