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How to Change a 2003 Duramax Injector

A Duramax engine is an eight-cylinder diesel engine that General Motors has manufactured since 2001. It appears in heavy Chevrolet trucks, such as the Silverado 2500HD. The most common 2003 Duramax engine has a displacement of 6.6 liters with electronic fuel injection. The fuel injectors are on top of the engine and deliver fuel to the engine in the correct quantity and sequence. Each cylinder of the engine has its own fuel injector.

Instructions

1

Remove the cables from the negative terminals of both batteries with a socket wrench. This ensures that you dont inadvertently start the engine. Disconnect the lower valve cover. Detach the fuel line from the fuel injectors and remove the bracket from the fuel injector.

2

Connect Special Tool J-29873 to the retainer bracket of the fuel injector. Attach a socket wrench to the special tool and pry the retainer bracket away from the fuel injector.

3

Detach the fuel injector from the injection socket. Remove the copper washer from the injection socket if it is not attached to the injector. Apply assembly grease to the copper washer and place it back into the injection socket.

4

Install the new fuel injector into the injection socket. Install the injector bracket and tighten its retainer bolt to 36 ft. pounds. with a torque wrench.

5

Attach the fuel line to the fuel injector and tighten its retaining bolts to 108 in. lbs. with a torque wrench. Install the lower valve cover with a socket wrench. Connect the cables to the negative terminals of the batteries.

Posted by Unknown at 5:15 PM

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