Jeep RX031572AA Rail-Fuel

You can Select Your Vehicle to check if RX031572AA fits your vehicle.

Remove the air intake plenum and cover the intake manifold. Disconnect vacuum hoses from the fuel rail and fuel pressure regulator, unplug the electrical connector for the fuel injector wiring harness, and remove the fuel pressure regulator. Remove the fuel rail assembly from the intake manifold and clean the injector holes. Lubricate the injector O-rings and install the injectors into their receiver cups. Install the fuel rail mounting bolts, fuel pressure regulator, and hose assembly.

On V6 models, do not separate the left and right fuel rails, as both sides are serviced together. Remove the injectors from the fuel rail, discard the O-rings, and replace them with new ones coated in clean engine oil. Clean the injector bores on the intake manifold and insert the injectors into their corresponding bores in the fuel rail. Securely tighten the fuel rail mounting nuts/bolts, connect the fuel line(s), and ensure they are properly seated. Connect the electrical connectors to each injector, following numbered tags if present.

Complete the installation process in reverse. After installation, turn the ignition switch to On a few times without starting the engine to build up fuel pressure and check for fuel leaks in the lines, fuel rail, and injectors.