Question 1

How to replace the Fuel Injection Fuel Rail Assembly for Bank 1 (LLT) (3.6L) on Buick Enclave?

Accepted Answer

The replacement of the fuel injection Fuel Rail assembly for bank 1 (LLT) (3.6L) requires the use of ch-48027 or without this tool to relieve fuel system pressure. You need to take away the fuel pipe shield and Intake Manifold as well as the high-pressure fuel pipe for disposal. Remove the Fuel Rail crossover pipe first while discarding it and extract the foam insulator covering the fuel rails. Disconnect the electrical connector of the Fuel Pressure Sensor and sever the wire harness tie straps. Sever the Fuel Pressure Sensor connection wires followed by removal of the Fuel Rail bolts together with the Fuel Pressure Sensor. Discard both clevis-type clamps used for Fuel Injector holding as direct fuel injectors require rebuilding after leaving their respective rail and cylinder positions. Proper Fuel Injector rebuild becomes necessary before reinstalling the Fuel Rail. The direct fuel injectors should be installed inside cylinder heads before securing them utilizing new hold down clamps. Position a new Fuel Rail correctly after lubricating its Fuel Injector cups with gm p/n 12345610 (Canadian P/N 9931930) or equivalent engine oil and begin bolting it from the outside then the inside while maintaining light hand torque. The mechanics should torque bank 1 Fuel Rail bolts initially to 12 nm (106 lb in) during the initial stage and reach a final torque setting of 23 nm (17 lb ft). The new installation of a Fuel Rail crossover pipe must be accompanied by a high-pressure fuel pipe as well as a high-pressure fuel sensor. The wiring harness electrical connector needs to connect to each injector and rail and pressure sensor. Start the ignition when the engine is off for a period of two seconds then shut it off for ten seconds while inspecting for fuel leakage before restarting the ignition. The repair process concludes by reattaching the foam insulator together with the Intake Manifold and fuel pipe shield and low side fuel pressure service port cap and fuel tank cap.

Question 2

How to replace the fuel rail assembly on Buick Regal?

Accepted Answer

The first step before changing the Fuel Rail assembly requires you to eliminate fuel pressure from your system before cleaning both the Fuel Rail assembly and its connections. First disconnect the fuel feed pipe along with the fuel return pipe from the Fuel Rail followed by removal of the vacuum line from the Fuel Pressure Regulator. First disconnect the ignition coil wires from their positions on top of the supercharger near the coil retainer clips and then disconnect the generator brace followed by the bypass valve actuator. You should disconnect the wires for the fuel injectors while also taking away the clips that connect the harness to the Fuel Rail front and rear. The left engine mount strut requires removal of its bolt and nut while the wiring harness must be displaced from the left engine mount strut bracket before eliminating the Fuel Rail hold-down nuts and stud. Use gentle force to take out the Fuel Rail applying the same pressure throughout the complete length. To install the Fuel Rail assembly place it on the Intake Manifold while hand-seating the fuel injectors before lightly applying clean engine oil to Fuel Injector o-rings followed by o-ring replacement on all serviced parts. The technician should install the Fuel Rail hold-down nuts first before torquing them to 10 n.m (89 lb in) and then install the Fuel Rail hold-down stud at 25 n.m (18 lb ft). Position the engine mount strut wiring harness followed by attaching the left engine mount strut bolt then tighten the nut to 48 n.m (35 lb ft). The Fuel Injector electrical harness needs its clips to be put back together while the electrical connectors are connected to the fuel injectors and the bypass valve actuator must be installed. After reinstalling the rear generator bracket and generator the next steps are to trace the ignition coil wires into retainer clips and to link the Fuel Pressure Regulator to its vacuum line and to bring the fuel feed and return pipes to the Fuel Rail. The negative Battery Cable installation should be completed along with leak inspection using ignition on-off cycles before installing the Fuel Injector sight shield.

OEM Buick Fuel Rail

59 Fuel Rails found

Buick Fuel Rail Part Number: 12701658

Buick Fuel Rail Part Number: 12615400

Buick Fuel Rail Part Number: 55515688

Buick Fuel Rail Part Number: 55486887

Buick Fuel Rail Part Number: 12706269

Buick Skid Plate, Passenger Side Part Number: 23241890

Buick Skid Plate, Driver Side Part Number: 23241891

Buick Fuel Rail Part Number: 12579128

Buick Fuel Rail Part Number: 17113696

Buick Fuel Rail Part Number: 12617904

Buick Fuel Rail Part Number: 12592186

Buick Fuel Rail Part Number: 24500370

Buick Fuel Rail Part Number: 12592187

Buick Fuel Rail Part Number: 17113251

Buick Fuel Rail Part Number: 25516337

Buick Fuel Rail Part Number: 12682763

Buick Fuel Rail Part Number: 12580913

Buick Fuel Rail Part Number: 12580914

Buick Fuel Rail Part Number: 12603212

Buick Fuel Rail Part Number: 17113607

Buick Fuel Rail

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