Well after reading what you say about the mechanical fuel pressure gauge I am wondering if my 2 inch air bubble is causing mine to read a wrong reading. Mine idles at 8psi and yours was 7psi. I have tried and tried to get that air bubble out but no luck.
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2005 RAM 3500, QUAD-CAB, 6-SPEED, 2WD, 50K MILES, MUFFLER IS MIA