Major Fuel Mileage DROP Dodge Cummins

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Mar 18, 2012 | 12:43 PM

powers1089

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Joined: Mar 2012

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From: McBee, SC

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?

---AutoMerged DoublePost---

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

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

Mar 18, 2012 | 12:46 PM

mysterync

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Joined: Mar 2007

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From: Blowing Rock,NC

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

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Apr 9, 2012 | 10:08 PM

m_mcgranahan

Diesel Fan

Joined: Apr 2012

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Hi,

Just curious what trans does your truck have?

Thanks

God bless...
Mark

Apr 9, 2012 | 10:21 PM

0cummin_un_glued

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From: Ash Flat Arkansas

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