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  1. Duramax First Generation: 2001-2004 (LB7)
    All Is the fuel pressure supposed to be constant? Mine bounces around: 4976.2 5135.8 5485.2 5447.7 5707.2 5515.8 Engine temp is 176, at idle with no external load on the motor. I do have a Air Dog 100 lift pump installed Thanks Bearwolf50
    lb7 fuel pressure
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