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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 29518
Experience:  GM Grand Master Technician 2007. 14 years experience.
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My 2002 duramax 2500 truck smokes do ihave a injector

Customer Question

my 2002 duramax 2500 truck smokes do ihave a injector problem
Submitted: 1 year ago.
Category: Chevy
Expert:  GM Tech (Cam) replied 1 year ago.

Welcome. I am Cam. This is a sign that the injector nozzles are leaking a bit. AT idle the computer tires to smooth the idle out, so the injector timing changes for each cylinder, which is the balancing rate. When they leak, during idle they smoke a light gray white or black smoke. The key with this is at idle. This is typical. The diagnosis for this is to disable the injectors one at a time and watch the amount of smoke that is being produced. Any injectors that you disable that make a difference will need to be replaced. This fault was never covered under the special policy that GM put out.