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GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15201
Experience:  GM Grand Master Technician 2007. 14 years experience.
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2005 Duramax Chevy 2500 4 door 4WD....looses power and a and

Customer Question

2005 Duramax Chevy 2500 4 door 4WD....looses power and a white and black smoke comes out. Put in neutral and hit the peddle it clears up......until next time. What causing this.
Submitted: 7 months ago.
Category: Chevy
Expert:  Jared D replied 7 months ago.


White smoke on the Duramax almost always indicates a bad fuel injector. Most of the time we replace all of the injectors and clean the entire fuel system.

The only real way to diagnose this correctly is with a good scan tool. You can use it to perform an injector power balance test.

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