OEM 2008 Cadillac XLR Fuel Rail

2008 Cadillac XLR Fuel Rail Parts Questions & Experts Answers

• Q: How to replace the fuel injectors and fuel rail on 2008 Cadillac XLR?

  A: In order to replace the fuel injectors and Fuel Rail it is vital to first use fuel pressure relief (Without CH 48027) or (With CH 48027) to release fuel system pressure. Clean the ports of the supercharger Fuel Rail and its injector by blowing compressed air into the front section of the inlet duct assembly which you must remove first. The disconnection procedure requires separation of electrical connectors between sciap and baro and map sensors as well as vacuum line detachment from map and sciap sensors. First remove the combination of sciap, baro, and map sensors with their bracket while using a shop rag to protect the supercharger drive belt from coolant liquid. Begin discharge of the charge air cooling system before taking off and disposing of the front section of the charge air cooler front manifold assembly while maintaining the hoses in place. The maintenance procedure requires separation of electrical connections between the air inlet temperature 2 sensor and the supercharger bypass solenoid valve electrical connector and the vacuum line detached from the supercharger actuator valve. The maintenance process begins by disconnecting the engine compartment fuel line fitting from the Fuel Rail and following this action with removing the Fuel Injector electrical connectors (1, 4, 6, 8) from both engine sides. Extract the right rear thick retaining wire of the injector rail bolt then untether electrical connectors (1, 2) from the oxygen sensor from both Fuel Rail support pieces. You need to open the supercharger Fuel Rail securing clip before taking out the Fuel Rail attaching studs while readjusting the rear inlet duct as needed and extracting the Fuel Rail assembly from the supercharger. First remove the lower o-ring seals from all injectors before taking out the retainers with injectors from the Fuel Rail and disposing of the o-ring seals. Clean engine oil must lubricate new Fuel Injector o-ring seals before installation onto the fuel injectors. You should install the fuel injectors onto the Fuel Rail while using new retainers and maintaining perpendicular electrical connector alignment with the crankshaft centerline. The installation process requires new o-ring seals which need lubrication with clean engine oil before the correct placement of each injector's spray tip end. Next, properly position both Fuel Rail and injectors toward the superchargerassembly before completing the installation with a careful downward pressure onto the Fuel Rail assembly. Attach the Fuel Rail studs but tighten them only to 10 n.m (89 lb in). You must place the Fuel Rail at the front supercharger clip before adding both oxygen sensor electrical connectors assemblies (1, 2) to the Fuel Rail brackets and installing the ground wire at the right rear injector rail bolt. Connect Fuel Injector electrical connectors (1, 4, 6, 8) at each engine side before attaching the engine compartment fuel line fitting to the Fuel Rail. Rejoin the vacuum hoses to both the supercharger actuator valve and to the supercharger bypass solenoid valve electrical connector and plug in the air inlet temperature 2 sensor electrical connection. New o-ring seals allow installation of the charge air cooler front manifold assembly front section and its subsequent installation of the sciap, baro, and map sensors with their bracket and then their connection to vacuum lines. Implement all electrical connections between the sciap, baro and map sensors after installing the front section of the supercharger inlet duct assembly. After filling the charge air cooling system with coolant you should inspect fuel system leaks before finishing the installation with the engine sight shield.