Jeep RL184085AC Injector-Fuel

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Disconnect the fuel delivery line quick-connect fitting and the fuel delivery line from the fuel rail. Disconnect the fuel injector electrical connectors and detach the injector wiring harness mounting clips from the fuel rail. Remove the fuel rail mounting bolts and carefully pull up on the fuel rail to remove it along with the injectors. Remove the O-rings from each injector and replace them with new ones coated in clean engine oil. Ensure the injector is properly seated in the mounting pipe. Reinstall the fuel rail and injectors, tightening the retaining bolts to the specified torque.

Coat the new O-rings with clean engine oil and install them on the injectors. Install the injectors into the fuel rail and secure with the injector clips. Guide the injectors/fuel rail assembly into the injector bores on the intake manifold and tighten the fuel rail mounting bolts. After installation, turn the ignition switch to On to activate the fuel pump and check for fuel leakage.

Symptoms may include fuel knock, poor acceleration and performance, low fuel economy, rough engine idle, and engine misfire.

Remove the throttle body upper and lower bonnets. Detach the injector connector by compressing the lock tabs and lifting up. Remove the retainer and gently pry the center collar of the injector to remove it. Discard the centering ring and upper and lower O-rings. Lubricate and install the replacement O-rings and centering ring. Align the injector with the housing and install it, followed by the retainer. Attach the injector connector and reinstall the bonnets.

Remove the engine cover and the air inlet tube. Disconnect the fuel supply line and the electrical connectors from the fuel injectors. Detach the PCV hose and the air make-up hose. Remove the fuel rail mounting bolts and carefully pull and wiggle the injectors to remove them. Remove the fuel rail and injectors as a single assembly.