Removal Procedure
Important:
| • | Use care in removing the fuel injectors to prevent damage to the
electrical connector pins on the injector and to prevent damage to the nozzle.
Service the fuel injector as a complete assembly only. The fuel injector is
an electrical component. Do Not immerse the fuel injector in any type of cleaner. |
| • | The engine oil may be contaminated with fuel if the fuel injectors
are leaking. |
- Disconnect the negative battery cable.
- Relieve the fuel system pressure. Refer to the Fuel Pressure Relief
Procedure.
- Remove the fuel rail assembly. Refer to Fuel Rail Assembly.
- Spread the injector retainer clip to release the injector from the fuel rail.
- Remove the fuel injector.
- Discard the injector retainer clip.
- Remove the injector O-ring seals from both ends of the injector.
Discard the O-ring seals. Save the O-ring backup for use in reinstallation.
Installation Procedure
Important:
| • | When ordering new fuel injectors, be sure to order the correct
injector for the application being serviced. |
| • | The upper and lower fuel injector O-rings use different part numbers.
To identify the correct O-ring, the upper O-ring is black and the lower O-ring
is brown. Both O-rings are the same size but consist of different material. |
| • | The fuel injector lower O-ring uses a nylon collar, called the
O-ring backup, to properly position the O-ring on the injector. Always reinstall
the O-ring backup, or the sealing O-ring may move on the injector when installing
the fuel rail and result in a possible vacuum leak. |
The fuel injector assembly (1) is stamped with a part number identification
(2) and a build date code (3). The build date code consists of the month (4)
1-9 (Jan-Sept) O, N, D, (Oct, Nov, Dec); day (5); and year (6).
- Lubricate the new injector O-ring seals with clean engine oil.
- Install the new injector O-ring seals on the injector.
- Install a new retainer clip on the injector. Position the clip
on the right side of the injector electrical connector.
- Push the fuel injector into the fuel rail injector socket with
the electrical connector facing outward. The retainer clip locks on to a flange
on the fuel rail.
- Install the fuel rail assembly. Refer to Fuel Rail Assembly.
- Tighten the fuel filler cap.
- Connect the negative battery cable.
- Inspect for leaks.
| 8.1. | Turn the ignition switch ON for 2 seconds. |
| 8.2. | Turn the ignition switch OFF for 10 seconds. |
| 8.3. | Turn the ignition switch ON. |
| 8.4. | Check for fuel leaks. |
