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Old Sep 26, 2010 | 03:12 AM
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mpg

i have a 91 f-250 with 7.3 not overloaded with power and no comparison to the 99 7.3 ps i have drove before (company truck) my question is what mpg should i be getting with this engine all my driving has been empty on 2 lane country roads in central wv bout an hour each way to work and i dont drive it hard avg 55 mph only getting about 11 or 12 mpg how can i improve this and how can i improve the power that it puts out with out making the mpgs worse thanks to all KENNETH
 
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Old Sep 26, 2010 | 05:30 AM
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search the first 10 pages or so, there has been many topics posted on it. try and do a search before posting a new question, theres a good chance it has just been covered.
 
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Old Sep 26, 2010 | 05:36 AM
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Your fuel mileage depends on many things. The main 2 are gearing and your right foot. Lower gear ratio= less mileage. Heavy right foot= less mileage.

Worn injectors, injection pump, dirty air filter, poor fuel, well worn engine, all contribute to poor mileage.

Along with checking and repairing the above items, improving the air flow both into and out of the engine will help with power and mileage. Adding a turbo is the number 1 way to get the most out the engine.
 
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Old Sep 26, 2010 | 05:42 AM
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https://www.ford-trucks.com/forums/9...l-mileage.html right there on page 7
 
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Old Sep 26, 2010 | 12:56 PM
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oreocreaming i looked for bout 4 hrs at posting and never found any way of improving mpgs but thanks for the page will check it out
mistakenID thanks for the info, i dont know the gearing on this truck but at 55 mph in overdrive (5 speed trans) runs at 1500 rpm it has a new crate engine with 40,000 miles new oil,fuel filter,air filter, injecton pump only bout 2 months old lots of other new parts and as far as a heavy foot hardly ever rev above 1800 on take off and run 55 most of the time. thanks again all info is appreciated. KENNETH
 
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Old Sep 26, 2010 | 01:16 PM
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I SEE ON OTHER POST ABOUT TWEEKING THE TIMING WHERE SHOULD IT BE FOR THE PEAK PROFORMANCE AND MPG. WOULD TURNING UP THE INJECTION PUMP HELP OR HURT ME THIS IS MY FIRST DIESEL SO JUST LEARNING ALTHOUGH I HAVE MECHINICED ON THE POWERSTROKES BEFORE EVERY THING STAYED STOCK ON THEM
 
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Old Sep 26, 2010 | 01:57 PM
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Old Sep 26, 2010 | 08:17 PM
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Where in central WV are you located?

All the hills and curves here don't help with fuel mileage, but with a 5 speed you should be getting better than that.
 
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Old Sep 27, 2010 | 10:12 AM
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dave
i live in cowen and drive to nettie to work,do u have a shop up there doing repairs on these
 
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Old Sep 27, 2010 | 11:29 PM
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No, I dig dirt (excavation business) for a living.

Looks like you are about 90 miles or 1.5 hours south of me, route 20 is less than 1/2 mile from my house though.

Maybe when things get slowed down this fall we can meet up and I can give you a hand with the timing.
My work is going nuts right now, not enough hours in a week.
 
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Old Sep 28, 2010 | 02:48 AM
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dave that sounds great i know how the business goes i worked for mccout and son in flatwoods for 5 yrs they done reclamation of abdoned mines for the dep it was the same way feast or famon get it while you can. i have a sister that lives in fairmont so traveling up there wont be no big deal when i get a day off work. i mechinic on coal trucks at green valley and its been 6 days a week and dont look like its going to slow down no time soon. thanks again for all the info.
 
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