Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Fuel Injector: Removal
Remove the lower valve rocker arm cover. See VALVE ROCKER ARM COVERS under REMOVAL & INSTALLATION in 6.6L V8 DIESEL ENGINES article. Remove the return line from injectors. Remove the retaining bolt from the injector bracket. Install the Fuel Injector Puller (J 44639) on the injector retainer bracket. Confirm which side of the banjo washers have the largest hole. Install a wrench on the J 44639 and pry away from the fuel injector. Remove the faulty injector(s). See Figure. Remove the copper compression washer from injection hole if the washer did not remove with the injector.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.