Fuel Injectors: Installation

When ordering new fuel injectors, be sure to order the correct injector for the application being serviced. The fuel injector assembly (1) is stamped with a part number identification (2). A four digit build date code (3) indicates the month (4), day (5), year (6), and the shift (7) that built the injector. See Fig 2.

1. Lubricate the new injector "O" ring seals with clean engine oil. See Fig 1.
2. Install the new injector "O" ring seals on the injector.
3. Install a new retainer clip on the injector.
4. 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 injector socket.
5. Install the fuel rail assembly. See FUEL RAIL ASSEMBLY .

Fig 1: Removing & Installing Fuel Injector

Courtesy of GENERAL MOTORS CORP.

Fig 2: Identifying Fuel Injector Serial Number

Courtesy of GENERAL MOTORS CORP.

When ordering new fuel injectors, you must order the correct injector for the application being serviced. The fuel injector (1) is stamped with a identification part number (2). A 4-digit build date code (3) indicates the month (4), day (5), year (6), and the shift (7) that built the injector. See Figure.

1. Lubricate the NEW injector "O" ring seals with clean engine oil. See Figure.
2. Install the NEW injector "O" ring seals onto the injector.
3. Install a NEW retainer clip on the injector.
4. Push the fuel injector (17) into the fuel rail injector socket with the electrical connector facing outward. The retainer clip (19) locks on to a flange on the fuel rail injector socket. See Fig 1.
5. Install the fuel rail. See FUEL RAIL ASSEMBLY .

Fig 1: Identifying Fuel Rail Components

Courtesy of GENERAL MOTORS CORP.