OEM 2009 Cadillac STS Fuel Rail

2009 Cadillac STS Fuel Rail Parts Questions & Experts Answers

• Q: How to replace the Fuel Injection Fuel Rail Assembly for Bank 2 (LLT) (3.6L) on 2009 Cadillac STS?

  A: The first step to replace the fuel injection Fuel Rail assembly for bank 2 (LLT) (3.6L) requires using an appropriate method to release the fuel system pressure for your setup. Residential the fuel pipe shield and high pressure fuel sensor before taking off the Fuel Rail crossover pipe, which should be thrown away. Supply the needed space to lift bank 2 Fuel Rail out from the engine by removing Fuel Rail bolts while you elevate the rear part for better access. The direct Fuel Injector hold down clamps must be discarded because direct fuel injectors need rebuilding any time they are dismounted from inside the Fuel Rail or cylinder head. Build new fuel injectors before installing them on the Fuel Rail. New hold down clamps should secure the direct fuel injectors after install into the cylinder heads. Segregate new Fuel Rail installation by applying gm p/n 12345610 (Canadian P/N 9931930) or equivalent silicon-free engine oil to Fuel Injector cups before inserting the front to meet the front injector followed by rotating the rear toward the bottom. Begin by installing the outer Fuel Rail bolts and after that secure the inner bolts before giving them a gentle hand twist. Proceed with installing the bank 1 Fuel Rail bolts starting with a torque of 12 nm (106 lb in) and following this with a final torque of 23 nm (17 lb ft) in sequence. The installation requires a new Fuel Rail crossover pipe and high pressure fuel sensor with appropriate electrical wiring placement to prevent damage. Attach the Fuel Injector wiring harness electrical connector to all the connected components of fuel injectors, Fuel Rail and Fuel Pressure Sensor. Exposed tracks and gaskets should be inspected for fuel leakage after enabling the ignition with engine turned off for two seconds followed by engine shutoff for ten seconds then ignition switch on with no engine running. Complete the installation with the fuel pipe shield and both the low side fuel pressure service port cap and the fuel tank cap.