GM 17113608
Fuel Rail

The first step to service the Fuel Rail involves carefully inspecting the left-hand Fuel Rail edition marked by eight identification digits that connects to cylinders 2, 4, and 6. Follow the o-ring installation rules because black o-rings fit above the other ones which have brown color despite their identical size. The fuel passages need protection from contaminants by covering all fittings and plugging all holes when performing maintenance. The first step requires fuel pressure reduction followed by lifting the upper manifold. You should disconnect the engine fuel feed pipe from the Fuel Rail end while also disconnecting the engine fuel return pipe from the Fuel Pressure Regulator end. Before further procedures remove both the fuel feed pipe o-ring and the fuel return pipe o-ring and disconnect the main injector harness electrical connector before pulling up the Fuel Injector connector lock release. Use your thumb to press down the Fuel Injector connector lock tab while pulling out the fuel injection harness from the Fuel Rail. Proceed to disconnect the electrical wiring of coolant temperature sensor while you remove the Fuel Rail retaining bolts. Lift all fuel injectors using the specific tool (J43013) to remove the Fuel Rail assembly. Every injector o-ring seal from its position at the spray tip section goes into disposal yet the o-ring back up stays intact for reuse. The Fuel Rail assembly requires tilting to position the injectors before bolt attachment to install with torques set to 10 n.m (7 lb ft). The coolant temperature sensor wiring must be hooked up before reattaching the injector wiring harness to the Fuel Rail followed by a proper lock of the injectors by pushing the slide lock into position. After connecting the main injector harness electrical connector you should install new o-rings on the fuel feed pipe and fuel return pipe followed by reinstalling the fuel feed pipe to the Fuel Rail while tightening the engine fuel feed pipe nut to 17 n.m (13 lb ft). Install the upper Intake Manifold while tightening the fuel filler cap then connect the fuel return pipe to the Fuel Pressure Regulator before securing the engine fuel return pipe nut to 17 n.m (13 lb ft). The maintenance process ends by connecting the negative Battery Cable before a leak inspection by turning the ignition on for two seconds followed by off for ten seconds and another lift of on to check for fuel leaks.

The first step to replace the Fuel Rail assembly should be the release of fuel pressure from the system while cleaning both the rail assembly and its connections. The next step consists of disconnecting both the fuel feed and fuel return pipes from their connections to the Fuel Rail and then following up with vacuum line separation from the Fuel Pressure Regulator. Proceed to remove the ignition coil wires as well as disconnect the Fuel Injector electrical connectors before unthreading the Fuel Rail hold-down bolts. Cautiously pull the Fuel Rail section using matched muscles across each side. Place the Fuel Rail assembly on the Intake Manifold while hand-seating fuel injectors. Each serviced component needs new o-rings and all Fuel Injector o-rings should receive a light application of clean engine oil before installation. Fasten the Fuel Rail hold-down bolts at 10 n.m (89 lb in) torque while connecting the Fuel Injector electrical connections and fuel feed pipes as well as fuel return pipes to the rail assembly. The vacuum channel should be reattached to the pressure regulator followed by coil wire installation and fuel cap tightening until secure while reconnecting the negative battery terminal. A leak inspection occurs by engaging the ignition switch on for 2 seconds, followed by 10 seconds off before re-engaging the ignition on where you check for fuel leakage. Settlement to install the fuel injection sight shield completes the process.

The j 43013 (Fuel Injector removal tool) needs to be used for Fuel Rail servicing. The service on a Fuel Rail requires initial steps to relieve pressure from fuel system followed by upper Intake Manifold removal. The service requires disconnection of the engine fuel feed pipe from the Fuel Rail followed by separation of engine fuel return pipe from the Fuel Pressure Regulator. The service also involves removal and disposal of the o-rings from both fuel feed pipe and fuel return pipe. Service begins by disconnecting both the main injector harness electrical connector followed by the coolant temperature sensor electrical connector. Utilize the j 43013 (Fuel Injector removal tool) to lift all fuel injectors before taking out the Fuel Rail assembly after removing the retaining bolts. You need to pull the lock release while pressing down on the lock tab so you can lift the connector from the injector. Remove the o-ring seals from injector spraying tips but keep and reuse the back up o-ring pieces. The procedure for Fuel Rail installation includes plugging its ports to stop contamination entry while also cautioning against compressing air or using solvent baths on the Fuel Rail assembly. The injector electrical harness should be reattached to the Fuel Rail while the electrical connectors are connected before pushing the slide lock into its final position. Before installing new o-rings for the injectors users must place each o-ring back up on its corresponding injector. Users should lubricate the o-rings with a small amount of clean engine oil while they position them at the spray tip end of each injector unit. The Fuel Rail assembly should be inserted into its Intake Manifold position while injector installation allows for proper seating and Fuel Rail attaching bolts must be tightened to 10 nm (7 lb ft). Installation requires connecting Fuel Rail electrical connectors followed by new o-rings insertion on fuel feed and fuel return pipes. The fuel feed pipe should be reinstalled on the Fuel Rail by tightening the engine fuel pipe nut to 17 nm (13 lb ft). The same tightening torque should be used to connect the fuel return pipe at the Fuel Pressure Regulator. Reinstall the upper Intake Manifold then fasten the fuel filler cap along with reconnecting the negative Battery Cable before checking for fuel leaks according to the specified procedures.

The Fuel Rail replacement must start with decompressing the fuel system followed by correct o-ring installation according to the black o-ring top positioning. Keep the holes and fittings sealed to avoid contamination. Plug the holes and cap the fittings to stop any contamination process. First detach the upper Intake Manifold in addition to the required removal of the engine fuel feed pipe from the Fuel Rail and the engine fuel return pipe from the Fuel Pressure Regulator. Users should first remove the o-rings from both fuel feed pipe and fuel return pipe before disconnecting the main injector harness and ignoring the fuel injector electrical connectors. They must next activate both the fuel injector connector lock release and lower the lock tabs to let go of the connectors. During this procedure first disconnect the ect sensor electrical connector then remove the Fuel Rail electrical wires from the rail before finally taking out Fuel Rail bolts together with the rail assembly. Any compromised Fuel Injector O-Ring seals need to be thrown out. Install the Fuel Rail assembly into the Intake Manifold after lubricating new o-ring seals with engine oil and by slightly tilting it to position the injectors. Follow the installation maintenance procedure by applying 10 n.m (89 lb in) torque on the Fuel Rail bolts. First connect the fuel injector electrical wiring harness to the designated slots and complete the ect sensor electrical connector setup before connecting all fuel injector electrical connectors which require a proper installation of slide locks into their correct positions. First install main fuel injector harness electrical connection before applying new o-rings to fuel-feed and return pipes for attachment to Fuel Rail with torque of 17 n.m (13 lb ft). The installation includes fuel return pipe attachment to the Fuel Pressure Regulator along with nut tightening to 17 n.m (13 lb ft). During this process upper Intake Manifold reinstallation and negative Battery Cable attachment must be performed. The inspection for fuel leaks requires this sequence with the ignition: turn on for 2 seconds followed by off for 10 seconds and final on position to identify any leakage.

The service of Fuel Rail starts with using proper procedures to reduce fuel system pressure. The task begins through the collection of necessary tools which should include the fuel line wrench (J43013). Disconnect both the Fuel Rail feed tube from the Fuel Rail as well as the fuel return tube from the Fuel Pressure Regulator after removing the upper Intake Manifold. You should remove the o-rings of both fuel feed pipe and fuel return pipe before disconnecting the main injector harness electrical connector. Press the lock release on the Fuel Injector connectors then depress the tab and properly remove the connector from the injector. Match the tasks through two steps in this order: start by taking off the Fuel Rail injector electrical harness then unplug the Coolant Temperature Sensor electrical connector. The procedure requires the removal of Fuel Rail retaining bolts before taking out the Fuel Rail assembly by discarding the injector o-ring seals but saving the o-ring back ups for future use. Prevent contamination between Fuel Rail installments by plugging inlet ports and outlet ports of the Fuel Rail. Mount the Fuel Rail assembly inside the Intake Manifold while tipping it to place the injectors correctly before tightening the Fuel Rail attaching bolts to 10 n.m (7 lb ft). Complete the Coolant Temperature Sensor electrical connection then mount the injector electrical harness onto the Fuel Rail followed by fitting all injector electrical connectors while sliding the locks fully into their position. Before finishing the procedure install new o-rings on both the fuel feed pipe and fuel return pipe while tightening the Fuel Rail engine nut to 17 n.m (13 lb ft). You need to complete fuel return pipe installation at the Fuel Pressure Regulator before tightening both the engine fuel return pipe nut to 17 n.m (13 lb ft) and placing back the upper Intake Manifold. In the last step reconnect the negative Battery Cable then check for fuel leakage by following the specific ignition on-off procedure.

Note down the eight-digit identification code that appears on the left Fuel Rail before replacement since this rail provides fuel to cylinders 2, 4 and 6. The correct method to install fuel injector o-rings includes placing the black o-ring above the brown o-ring although their sizes match because they have different material compositions. Fittings should receive caps and holes need plugging when you service the device to avoid contamination. First drain the fuel pressure before uninstalling the upper Intake Manifold. Through the process disconnect both engine fuel feed pipes at the Fuel Rail and engine fuel return pipes at the Fuel Pressure Regulator while removing the o-rings from all the pipes. Unplug the main injector harness electrical connector as well as the fuel injector connectors through the lock release up action and lock tab depression. Separate the injector electrical harness from the Fuel Rail before removing the coolant temperature sensor electrical connector. Begin the process by taking off the Fuel Rail retaining bolts followed by the Fuel Rail assembly before moving to remove injector o-ring seals from the spray tips of each injector. The new Fuel Rail assembly requires tilting for injector installation before securing it with attaching bolts which should be tightened to 10 n.m (89 lb in). Complete the electrical connection of the coolant temperature sensor before mounting the injector electrical harness to the rail and attending to the injector connectors by securing their slide locks. Implement this procedure by installing new o-rings onto the fuel feed and return pipes then attaching the fuel feed pipe at the Fuel Rail and tightening the nut to 17 n.m (13 lb ft). The negative Battery Cable receives reinstallation after connecting the fuel return pipe to the Fuel Pressure Regulator and tightening its nut to 17 n.m (13 lb ft). An inspection for leaks should be conducted by first pushing the ignition on for two seconds followed by a ten-second period with the ignition off and then another two-second push of the ignition on before checking for any fuel leakage. This leak test precedes the upper Intake Manifold installation.

Reconnect the main injector harness electrical connector.

Tighten it to 25 N.m (18 lb ft).

Inspect for fuel leaks by turning the ignition ON for 2 seconds, OFF for 10 seconds, and then ON again, checking for any leaks.

Discard them.

10 N.m (89 lb in).

Disconnect the engine fuel feed pipe at the fuel rail and the engine fuel return pipe from the fuel pressure regulator, then remove and discard the fuel feed pipe and fuel return pipe O-rings.

Note the eight-digit identification number stamped on the left-hand fuel rail, which services even cylinders 2, 4, and 6.

Replace the O-rings on all serviced components and lightly oil them with clean motor oil.

Connect the negative battery cable.

Turn the ignition ON for 2 seconds, OFF for 10 seconds, and then ON again, checking for any leaks.

Install the black O-ring in the upper position and the brown O-ring in the lower position if they are different colors.

Pull up the lock release, depress the lock tabs, and disconnect the connectors.

Remove the fuel rail retaining bolts and the fuel rail assembly, then take off the injector O-ring seal from the spray tip end of each injector.

To prevent dirt and contaminants from entering the fuel passages.

Cap the fittings and plug the holes during servicing.

Install new O-rings and connect the fuel feed pipe at the fuel rail, tightening the nut to 17 N.m (13 lb ft), then connect the fuel return pipe at the fuel pressure regulator, also tightening the nut to 17 N.m (13 lb ft).

Install the fuel rail hold-down bolts and torque them to 10 N.m (7 lb ft).

The injector electrical harness from the fuel rail, the coolant temperature sensor electrical connector, and the fuel rail retaining bolts.

Remove the injector O-ring seal from the spray tip end of each injector.

Note the eight-digit identification number stamped on the left-hand fuel rail, which services even cylinders 2, 4, and 6.

Install the black O-ring in the upper position and the brown O-ring in the lower position, as they are made of different materials despite being the same size.

Remove the injector O-ring seal from the spray tip end of each injector.