OEM 2009 Cadillac CTS Fuel Rail

2009 Cadillac CTS Fuel Rail Parts and Q&A

• Q: How to replace the Fuel Injection Fuel Rail Assembly for Bank 2 on 2009 Cadillac CTS?

  A: The replacement procedure for the fuel injection Fuel Rail assembly in bank 2 begins by weakening the fuel system pressure according to your engine specifications. First release the fuel-system pressure through the acceptable engine procedure then remove the fuel pipe shield together with the high pressure fuel sensor. The next step requires removal of the Fuel Rail crossover pipe followed by its disposal. Begin by removing the Fuel Rail bolts before lifting the bank 2 Fuel Rail from the engine space while you should elevate the rear side first to simplify the removal process. Your maintenance process requires discarding direct Fuel Injector hold down clamps because rebuilding the direct fuel injectors becomes mandatory whenever they detach from the Fuel Rail or cylinder head. The next step requires rebuild of all fuel injectors after Fuel Rail removal. The cylinder heads require direct fuel injectors which you should mount with fresh hold down clamps. Silicon-free engine oil gm p/n 12345610 (Canadian P/N 9931930) or equivalent must be used to lubricate the new Fuel Rail injector cups before the rail is inserted by first positioning the front end on the front injector and then slowly pivoting the rear section downward. Begin by mounting the external Fuel Rail bolts and then move to the inner ones before applying light torque to both. Perform the Fuel Rail bolt tightening procedure in the directed sequence which starts at 12 nm (106 lb in) then finishes at 23 nm (17 lb ft). A new Fuel Rail crossover pipe should be installed with proper electrical wiring placement to avoid damage. The high pressure fuel sensor installation should begin with connecting the Fuel Injector wiring harness electrical connector. Test for fuel leaks by enabling the ignition while avoiding engine start which should be followed by shutting off the ignition for ten seconds before reactivating ignition to look for leakage. The last step involves placing the fuel pipe shield onto the parts before securing the low side fuel pressure service port cap and fuel tank cap.