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-   -   Sudden mileage drop with diesel (http://www.ramforumz.com/showthread.php?t=138106)

Desert Rat 04-01-2013 07:57 PM

Sudden mileage drop with diesel
 
2007 5.9 4x4 2500. I usually average 15-16MPG with mixed driving. Last tank was just over 11. I can think of some not optimal conditions on this last tank, but nothing to justify a drop like that.

Truck throttle response hasn't seemed to change, no check engine lights, and no black smoke.....Just garbage fuel economy.

ideas?

05hemi1500 04-02-2013 02:06 PM

Check your intake make sure the filter is clean and all components are tight no air leaks. Then plug into a computer and check your ECMs fuel system readings see if you have a possible problem with and injector or a possible partial blocked fuel line


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