Fuel Injector Replacement. Cadillac Concours 1996

For 1990-2009 cars

### Removal Procedure

#### Tools Required

Refer to J 41081 , Injector Remover

1. Remove the negative battery cable.
2. Relieve the fuel system pressure.

Refer to Fuel Pressure Relief Procedure .

3. Remove the injector electrical connector.
4. Release the fuel rail to intake manifold locking tab by pushing toward center of intake manifold.
5. Pry the injector up out of intake manifold using J 41081 between the bottom of injector and intake manifold.
6. Spread the injector retainer clip (10) to release injector from fuel rail.

Important: It may be necessary to release the adjacent injector(s) from the intake manifold to allow increased fuel rail movement for injector access.

Important: When replacing a fuel injector, it may be necessary to have the following identification information. The fuel injector assembly contains the part number identification (2), the build date code (3), the month (4) 1-9 (Jan-Sept) O, N, D (Oct, Nov, Dec), the day (5), and the year (6).

7. Remove the fuel injector assembly (1).

### Installation Procedure

1. Lubricate the new upper (11) and lower injector (13) O-rings with clean engine oil and install on injector.
2. Install the new retainer clip (6) onto injector.
3. Install the fuel injector (12) into fuel rail.

• | Ensure injectors are aligned by orientating electrical connector perpendicular to crankshaft.

• | Push in far enough to engage retainer clip with machined slots on rail socket.

4. Snap the fuel rail down onto intake manifold.
5. Install the injector electrical connector.
6. Tighten the fuel filler cap.

6.1. | Turn ignition switch to On position for 2 seconds.

6.2. | Turn the ignition switch OFF for 10 seconds

6.3. | Turn the ignition switch ON.

6.4. | Check for fuel leaks.

7. Install the intake manifold top cover.
8. Install the negative battery cable.