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:argh:

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

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Hi,

Just curious what trans does your truck have?

Thanks

God bless...
Mark

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