Poor fuel mileage?
#1
Poor fuel mileage?
My cummins diesel just simply loves diesel fuel. I'm totally stock except for an up graded fuel pump, fuel and oil pressure guages and a new vp44. Starts on first hit and idles smoothly. When it was new it was getting 20 mpg unloaded. Now I get around 12 mpg which is not good.
What should be done to increase fuel mileage? If you know, please tell me.
Thanks, Kerley
What should be done to increase fuel mileage? If you know, please tell me.
Thanks, Kerley
#3
The following users liked this post:
kerley (11-13-2010)
#6
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I really don't know about the winter fuel but I do know something just Is'nt right.
Last edited by kerley; 11-11-2010 at 05:50 PM. Reason: Automerged Doublepost
#7
The following 2 users liked this post by Dr. Evil:
big bad diesel 416 (11-12-2010),
kerley (11-13-2010)
#9
You have a good sence of humor, Yes the dirty [45ro0vtnivtovt5,p] ripped me off. They also stole the step off my drivers side and spilled something on the hood that ate the clearcoat off my paint. I raised all kinds of hell and they said, [ prove it.] They did eventually replace the step after I suggested contacting my attorney. Kerley
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I really don't know about Boost leaks. Kerley
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I don't know.
Not to change the subject from the Dodge/Cummins, but I have been running on road diesel in my tractor sence new and allways had a little rattle in the engine. This week I bought some "off road diesel" and the rattle is gone and she is purring like like a kitty with no added additives. Kerley
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I really don't know about Boost leaks. Kerley
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Not to change the subject from the Dodge/Cummins, but I have been running on road diesel in my tractor sence new and allways had a little rattle in the engine. This week I bought some "off road diesel" and the rattle is gone and she is purring like like a kitty with no added additives. Kerley
Last edited by kerley; 11-13-2010 at 06:35 AM. Reason: Automerged Doublepost
#10
I am getting about the same mileage in my truck. I am pretty sure its my trans that is slipping. I just put on a new Vp44, raptor, hughes 15lxfm torque converter, edge comp, gauges (except trans gauge) intake, exhaust, rv275 nozzles, and 33" tires. my mileage started off around 18-19 but slowly got owrse after the 33" tires. Initially it dropped about .5-1 mpg from the tires. and slowly lost mpgs every tank, then i put my rv275s in and gained another mpg or 2 so it was back up to 15 but has since drorpped back to 13. I am sure it is my tranny starting to slip worse and worse. My RPM are about 2-300 (1900-2000) higher than they should be at 60 mph. when installing my tc the fluid came out Black, after installing my tc I adjusted my bands and the front band was adjusted at almost 4.5 turns from 6 ftlbs of torque! should only be 1.5 or so it made a huge difference in driveability but not much in mileage but I am almost certain it is because my trans clutches are too far gone.
since you have a manual I would take a look at your clutch. if its a newer clutch double check the engagement point. Also check your valve lash and adjust accordingly. it is fairly simple to do this stuff yourself you just need the confidence and a haynes Manual never hurt anyone. Plus it will save you some serious bucks!
since you have a manual I would take a look at your clutch. if its a newer clutch double check the engagement point. Also check your valve lash and adjust accordingly. it is fairly simple to do this stuff yourself you just need the confidence and a haynes Manual never hurt anyone. Plus it will save you some serious bucks!
The following users liked this post:
kerley (11-30-2010)