Diesel Bombers - MPG help

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Jordan Gilbreth

05-17-2015 11:29 PM

MPG help

I have a 1997 cummins 2500 automatic that use to get 22 MPG but now only gets 13 and 14 on a good day. What's going on? Also could it have anything to do with the transmission?

97cummins

05-18-2015 12:59 AM

welcome to db:hellox:
did you do anything to the motor recently to affect the mpg?
we are going to need some more info on when it started dropping, ect.

Jordan Gilbreth

05-18-2015 10:29 PM

The truck is practically stock with no mods to the motor, over time it has just got worse. Lately it seems the transmission is not working property, could that affect MPG

JBearSVT

05-19-2015 05:06 PM

Very much so.

Bruiser Dodge

06-20-2015 07:25 PM

:humm:

Quote:

Originally Posted by 97cummins (Post 1092231)

welcome to db:hellox:
did you do anything to the motor recently to affect the mpg?
we are going to need some more info on when it started dropping, ect.

How do u turn up the boost on my 98 12 valve cummins?

Bruiser Dodge

06-20-2015 07:26 PM

[QUOTE=Bruiser Dodge;1094313]:humm:

How do u turn up the boost on my 98 12 valve cummins?

4x4manonbroke

06-22-2015 05:11 PM

I would start by having the Injection Pump timed .. they can over time slip ..

also run a quart of ATF ( dextron .. not synthetic ) .. it will help clean out the injectors and combustion gum.

also Fuel pressure and the trans will KILL your Mpg ..

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