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How to Remove 2004 Duramax Injectors

The Duramax family of diesel engines are designed by Isuzu and built by General Motors. They are primarily available in medium-duty trucks, such as the Chevrolet Silverado 2500 pickup. The first generation of Duramax engines had the engine code LB7, and were in production from 2001 through 2004. The 2004 Duramax engine used common-rail direct injection, which does not rely on an electronic controller. The procedure for removing the fuel injectors from a LB7 Duramax engine is generally the same for all vehicles.

Instructions

1

Disconnect the cable from the batterys negative terminal with a socket wrench to prevent the accidental discharge of fuel during the injector removal. Remove the mounting bolts for the lower valve cover and disconnect the cover.

2

Remove the retaining bolts for the fuel spill line with a socket wrench, and detach the spill line from the fuel injector. Remove the retainer bolt from the bracket of the fuel injector.

3

Attach fuel injector removal tool J 44639 to the bracket for the fuel injector. Grip the handle of the removal tool with a flare nut wrench.

4

Pull the flare nut wrench away from the fuel injector to pry it out of the injector hole. Remove the fuel injector from the vehicle.

5

Check the fuel injector for a copper washer. Remove the washer from the injection hole if the washer is not on the injector.

6

Repeat Steps Two through Five to remove the remaining fuel injectors.

Posted by Unknown at 3:15 AM

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