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  1. M

    Help with diagnosis please: 6.7 Cummins, new turbo, intermittently blowing blue smoke

    2007 3500 dually, 6.7 Cummins, 135K miles: Last year my turbo went out so I did some research and replaced it with an ATS Aurora 4000. I also did an EGR cleanout at that time. It was quite a tussle getting it in and out, but once it was installed, it ran awesome for a few months. Loads of...
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