Three electronically controlled fuel injectors are located on top of each cylinder bank. The injectors generate a fine fuel atomization at injection pressures of up to 1,600 bar (23,200 psi). Each injector is held in place by a tensioning claw and retaining torque-to-yield bolt. A copper seal ring is located on the injector tip to seal off the injector to the combustion chamber. When servicing the injectors, always replace the copper seal ring and retaining torque-to-yield bolt. Lubricate the body of the injector with Mopar® 05012249AA - Nickel Antisieze Compound, or Molikote Anti-Fretting Paste (MB part number A001-989-42-51-10).

WARNING: High-pressure fuel lines deliver fuel under extreme pressure from the injection pump to the injectors. This may be as high as 1600 bar (23,200 psi). Use extreme caution when inspecting for high-pressure fuel leaks. Fuel under this amount of pressure can penetrate skin causing personal injury or death. Inspect high-pressure fuel leaks with a sheet of cardboard. Wear safety goggles and adequate protective clothing when servicing the fuel system.

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.

Safety Warning

Fuel Injector

Use the Manual With the Right Hardware

When to See a Mechanic

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