OEM 2008 Cadillac CTS Fuel Rail

2008 Cadillac CTS Fuel Rail Parts and Q&A

• Q: How to replace the Fuel Injection Fuel Rail Assembly for Bank 2 (LLT) VIN V with Direct Fuel Injection on 2008 Cadillac CTS?

  A: The procedure to replace the fuel injection Fuel Rail assembly for bank 2 (LLT) with direct fuel injection starts with releasing fuel system pressure through the suitable method of your setup. The first step requires removal of the cross vehicle brace and the fuel pipe shield before disconnecting the Intake Manifold. Start by removing the Fuel Rail foam insulation and proceed to disconnect the Fuel Injector wiring harness from both fuel injectors and Fuel Rail as well as the Fuel Pressure Sensor. Candidates should extract both the high-pressure fuel sensor together with the Fuel Rail crossover pipe and eliminate the crossover pipe from usage. Detach the Fuel Rail bolts before elevating the engine bank one Fuel Rail upward to remove it carefully from the engine block with attention to raising its rear part for better access. Direct Fuel Injector hold-down clamps should be discarded since rebuilding becomes necessary when removing or mounting the Fuel Rail or Cylinder Head. Reconstruction of fuel injectors must happen following Fuel Rail extraction. Direct installation of rebuilt fuel injectors requires users to insert their components into the cylinder heads before tying them down with new hold-down clamps. Apply gm engine oil gm p/n 12345610 (or equivalent Canadian P/N 9931930) to new Fuel Injector cups without silicone contamination before setting the rail with its front section covering the front injector while lowering its rear portion. Begin partnering the installation by fitting outer Fuel Rail bolts before the inner ones and applying only gentle pressure to fasten both. Follow this procedure when tightening the bank one Fuel Rail bolts by applying a first pass torque of 12 n.m (106 lb in) then a final torque of 23 n.m (17 lb ft). Movable parts are the high-pressure fuel sensor along with the Fuel Rail crossover pipe which you must install followed by reattachment of the Fuel Injector wiring harness. The system needs a fuel leak check by following a particular ignition power-up and power-down sequence. The service process requires reinstalling the foam insulator and Intake Manifold together with the fuel pipe shield and low side fuel pressure service port cap and fuel tank cap before adding the cross vehicle brace.