Chrysler 4669938 Fuel Injector

Connect a special injector harness test light to the injector electrical connector; if the light flashes, the injector is receiving voltage. If there is no voltage, check the ASD relay operation and the injector wiring circuit for issues.

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.