GM 24508208
Fuel Injector Kit

The first step for Fuel Injector repair requires users to use the fuel pressure gauge (J 34730) for releasing fuel pressure. The first step to service fuel injectors is to remove the Fuel Rail and subsequently the retaining clips and finally pull out the fuel injectors. During injection service the Fuel Injector upper and lower rings should be removed before refitting them with new rings. A nylon collar known as the o-ring back up properly positions the lower o-ring on the injector yet this back up needs to be reinstalled to avoid driveability issues and vacuum leak formation during Fuel Rail installation. The procedure for new injector installation includes oiling all fresh o-rings before inserting the o-ring back up followed by the lower o-ring and the upper o-ring . To complete this step install the Fuel Injector into the Fuel Rail after you have secured it with retaining clips followed by attaching the Fuel Rail while ending with the installation of the Fuel Injector sight shield. Order all necessary part numbers for fuel injectors and o-rings according to the exact application requirements of the vehicle service.

Take care when replacing the Fuel Injector to protect its electrical connector pins and nozzles since the injector functions as an electrical unit that needs to be free from immersion in any cleaner solution. Service of the Fuel Injector must be performed by replacing the entire assembly and replacing the o-rings whenever fuel leaks are present to avoid fuel contamination of engine oil. Start the procedure by removing the Fuel Rail before extracting the Fuel Injector retaining clip and Fuel Injector and both upper and lower o-rings afterwards. Verify that new fuel injectors correspond to the specific application because the Fuel Injector assembly shows part number identification together with manufacturing date, week code and production plant number. Clean engine oil should be applied to fresh o-rings before installation during which workers must start by placing the lower o-ring then position the upper o-ring before attaching the Fuel Injector to the rail. To finish the procedure replace the Fuel Injector through the retaining clip before reinstalling the Fuel Rail.

Service of Fuel Injector requires beginning with Fuel Rail removal followed by unclipping the Fuel Injector retaining clips before accessing the fuel injectors. The technician must remove the upper o-ring , lower o-ring along with the o-ring back up while being cautious to avoid any damage to electrical connector pins or nozzles. The repair process demands complete o-ring replacement since the lower o-ring requires the o-ring back up to achieve correct positioning which stops vacuum leaks from occurring. It is essential to use the right part number when replacing injectors since each unit features a specific designed flow rate requirement. Both upper and lower o-rings share equal dimensions yet differ in materials with black and brown colors respectively. For new o-ring installation begin by oiling them then place the Fuel Injector back up o-ring followed by the lower o-ring and finish by setting the upper o-ring. After attaching the Fuel Injector to the Fuel Rail utilize the retaining clips to fasten it followed by Fuel Rail reinstallation.

US dealers should empty two pre-measured containers into the J 38500-A, while Canadian dealers should measure and dispense 48 ml into the J 38500-A.

Take out the fuel injector retaining clip and the fuel injector.

Take out the fuel injector retaining clips before removing the fuel injectors.

Install the fuel injector lower O-ring and then the upper O-ring.

Install the fuel injector lower O-ring and then the upper O-ring.

To prevent fuel leaks that could contaminate engine oil.

Start by placing the upper O-ring and lower O-ring onto the fuel injector, then install the injector back into the fuel rail and secure it with the retaining clip.

Fuel Line Shut-Off Adapters (J 37287), Fuel Injector Cleaner (J 38500-A), 3/8 Fuel Line Shut-Off Adapter (J 42873-1), 5/16 Fuel Line Shut-Off Adapter (J 42873-2), 3/8 Fuel Line Shut-Off Adapter (J 42964-1), and 5/16 Fuel Line Shut-Off Adapter (J 42964-2).

Install the fuel injector lower O-ring followed by the upper O-ring.

Electrically disable the vehicle fuel pump, disconnect the fuel feed and return line at the fuel rail, and plug them using the appropriate shut-off adapters.

Fuel Line Shut-Off Adapters (J 37287), Fuel Injector Cleaner (J 38500-A), 3/8 Fuel Line Shut-Off Adapter (J 42873-1), 5/16 Fuel Line Shut-Off Adapter (J 42873-2), 3/8 Fuel Line Shut-Off Adapter (J 42964-1), and 5/16 Fuel Line Shut-Off Adapter (J 42964-2).