Major Fuel Mileage DROP Dodge Cummins

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03-18-2012, 12:43 PM

powers1089

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Major Fuel Mileage DROP Dodge Cummins

I am driving an '03 Dodge Ram 3500 with a 5.9 litre Cummins engine, cut down stock exhaust, hauling a 40' gooseneck trailer with approx. 11K load. When I first started out I was averaging 15 - 17 mp gallon. I suddenly dropped to 6-8 mp gallon. Anyone have any ideas what is up?

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I am on the road and could really use some help...Thanks

Last edited by powers1089; 03-18-2012 at 12:43 PM. Reason: Automerged Doublepost

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03-18-2012, 12:46 PM

mysterync

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I would be getting to The shop for a return test and a couple injectors.

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04-09-2012, 10:08 PM

m_mcgranahan

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Hi,

Just curious what trans does your truck have?

Thanks

God bless...
Mark

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04-09-2012, 10:21 PM

0cummin_un_glued

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yup like said before get the injectors tested or at least check the rail pressure out while driving i'm going to bet the desired is higher then the actual

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