Chrysler RX042029AA Injector-Fuel

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First remove the air cleaner assembly and relieve the fuel system pressure. Disconnect the negative battery cable and remove the fuel pressure regulator if necessary. Remove the Torx screw and carefully pry off the injector cap. Use a small screwdriver to gently pry the injector from the throttle body. Peel off the upper and lower O-rings from the injector, making sure to retrieve the lower O-ring if it is not on the injector.

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.

Remove the fuel rail assembly and place the fuel rail assembly on a clean work surface so the fuel injectors are accessible. Remove the injector lock ring from the fuel rail and injector by prying it off with a small screwdriver. Pull the injector straight out of the receiver cup. Inspect the injector O-rings for damage. Replace them with new ones if necessary (Push the new O-ring over the tip of the injector and into the groove Insert a small screwdriver under the 0-ring and pry it off - be careful not to damage the injector tip). Prior to installation, lubricate the O-rings with a light film of clean engine oil. Push the top of the injector straight into the fuel rail receiver cup, taking care not to damage the O-ring. Slide the open end of the injector clip into the top slot of the injector, onto the receiver cup ridge and into the side slots of the clip. Install the fuel rail.

Start by relieving the fuel pressure and disconnecting the battery cable. Remove the air intake duct/resonator from the air filter housing and throttle body. Use a special tool to remove the fuel line from the fuel rail and label and remove any interfering vacuum hoses or electrical wiring and connectors. On 2.4L four-cylinder engines, drain the coolant, remove the thermostat, injector wiring, PCV valve, and intake manifold bolts. On V6 engines, disconnect electrical connectors from the throttle body, remove ignition coils, and intake manifold (4.0L engines). Clean around the injectors and remove the fuel rail mounting nuts/bolts, then gently rock the fuel rail to remove it along with the injectors as an assembly.

Detach the cable from the negative battery terminal.