Poor Milage - Ford Powerstroke Diesel Forum
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post #1 of 13 Old 04-07-2011, 07:26 PM Thread Starter
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Poor Milage

Alright i know its been talked about a 1,000 times, but i cant figure anything out. I have a 2000 f250 7.3l reg cab long bed- Dp- tuner (run it on 120hp) cold air intake, straight exhaust, Aih delete, non ebv ped., x wheel, hpop crossover, 285/75/26 cooper discovers. and so on

I think my tanks 34 or 36 gal i only get like 400- 420 miles on it so i think im getting like 11- 12 all the time idk what the deal is i have tried my 80hp eco tune and still no luck i actually do better on the 120, and yes my tires are aired properly, please help me!!!!!!!

2000 F250 7.3l Powerstroke Automatic 202,000 miles
Dp Tuner, Gowshift Gauges, X Wheel, AID plug,
HPO X line, Non-EBV Ped, Cold Air Intake, Billet Torque Converter
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post #2 of 13 Old 04-07-2011, 07:41 PM
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Originally Posted by C.Shaffer View Post
Alright i know its been talked about a 1,000 times, but i cant figure anything out. I have a 2000 f250 7.3l reg cab long bed- Dp- tuner (run it on 120hp) cold air intake, straight exhaust, Aih delete, non ebv ped., x wheel, hpop crossover, 285/75/26 cooper discovers. and so on

I think my tanks 34 or 36 gal i only get like 400- 420 miles on it so i think im getting like 11- 12 all the time idk what the deal is i have tried my 80hp eco tune and still no luck i actually do better on the 120, and yes my tires are aired properly, please help me!!!!!!!
how much air?
26 inch rims?

2000 Ford F-250 Lariat 4WD
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Garrett Turbo
Leveling Kit
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285/75R16 Cooper STT
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This is what it looked like when i bought before new tires and touch screen.

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post #3 of 13 Old 04-07-2011, 07:43 PM
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it appears we have similar trucks with the same tire size. My truck gets 14.5 mpg city driving.

2000 Ford F-250 Lariat 4WD
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Garrett Turbo
Leveling Kit
Gloshift pillar gauges
5" Straight Exhaust
Torque Converter Lockup Switch
Clarion 7" Touchscreen GPS Navigation
285/75R16 Cooper STT
Wicked Wheel
Warn Hubs

This is what it looked like when i bought before new tires and touch screen.

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post #4 of 13 Old 04-07-2011, 08:00 PM Thread Starter
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sorry 16 inch rims i think im running them around 50 psi

2000 F250 7.3l Powerstroke Automatic 202,000 miles
Dp Tuner, Gowshift Gauges, X Wheel, AID plug,
HPO X line, Non-EBV Ped, Cold Air Intake, Billet Torque Converter
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post #5 of 13 Old 04-07-2011, 08:06 PM
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Quote:
Originally Posted by C.Shaffer View Post
Alright i know its been talked about a 1,000 times, but i cant figure anything out. I have a 2000 f250 7.3l reg cab long bed- Dp- tuner (run it on 120hp) cold air intake, straight exhaust, Aih delete, non ebv ped., x wheel, hpop crossover, 285/75/26 cooper discovers. and so on

I think my tanks 34 or 36 gal i only get like 400- 420 miles on it so i think im getting like 11- 12 all the time idk what the deal is i have tried my 80hp eco tune and still no luck i actually do better on the 120, and yes my tires are aired properly, please help me!!!!!!!
My question is HOW are you calculating your mileage? Sounds like you are just guessing based off your fuel needle.

You NEED to calculate based on gallons per mile:

Fill up tank all the way. Drive for 100-200 miles, fill up again, and divide miles/gallons. THAT is your mileage.

If you are doing it that way I apoligize....but...
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post #6 of 13 Old 04-07-2011, 08:25 PM Thread Starter
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Every time i fill up im just taking my miles devided by the amount of gal it took to fill it up

2000 F250 7.3l Powerstroke Automatic 202,000 miles
Dp Tuner, Gowshift Gauges, X Wheel, AID plug,
HPO X line, Non-EBV Ped, Cold Air Intake, Billet Torque Converter
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post #7 of 13 Old 04-08-2011, 07:02 AM
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Make sure you are filling to the same levelevery time too. These tanks like to foam up the fuel and sometimes you can get 4-5 extra gallons after it clicks off the first time if you take your time.

As far as MPG, try keeping off the skinny pedal for 100-200 miles. Use the throttle very lightly, use cruise, don't go over 2000 RPM, then refill and see if your MPG improves. You are using the 120 tune so it might be hard not to hammer on it.

Also, don't idle a lot. Idling really cuts down on the MPG in my experience. In the morning, I get in and start it and go.

Edit: I see you are running 285's. If I am thinking correct, the stock tire for the truck are 265's. If this is the case, you are traveling more miles per tank than what the odometer says. For example, with my truck, I am running 285's and I see about a 0.5 mpg improvement of actual miles traveled over miles traveled on the odometer.

Just my

Mitch

2006 Ford F-350 6.0 Crew Cab Lariat Short Box./4" exhaust/SCT X4 7015 (White Noise)/Autometer Boost and Fuel Pressure(Strictly Adapter)/Edge Insight CTS2/FICM Repair.com Complete Wire Kit/08+ Rear Differential Cover/B&W Goosneck hitch/Sinister Coolant Filter/High Idle/Blue Spring/Purchased 2/28/2014

2002 Ford F-350 7.3 Crew Cab Lariat Short Box, SOLD 2/24/2014


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Last edited by thebierguy; 04-08-2011 at 07:06 AM.
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post #8 of 13 Old 04-08-2011, 07:27 AM
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Your longbed truck has a 38 gallon tank. Just FYI. And everybody in here has said everything that I would, so....

Zach
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post #9 of 13 Old 04-08-2011, 12:29 PM
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Quote:
Originally Posted by thebierguy View Post
Edit: I see you are running 285's. If I am thinking correct, the stock tire for the truck are 265's. If this is the case, you are traveling more miles per tank than what the odometer says. For example, with my truck, I am running 285's and I see about a 0.5 mpg improvement of actual miles traveled over miles traveled on the odometer.
285/265 refers to the width of the tire......not the height.
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post #10 of 13 Old 04-08-2011, 12:34 PM
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They 285/75/16's (32.8 in) have a different diameter than 265/75/16's (31.6 in)

Mitch

2006 Ford F-350 6.0 Crew Cab Lariat Short Box./4" exhaust/SCT X4 7015 (White Noise)/Autometer Boost and Fuel Pressure(Strictly Adapter)/Edge Insight CTS2/FICM Repair.com Complete Wire Kit/08+ Rear Differential Cover/B&W Goosneck hitch/Sinister Coolant Filter/High Idle/Blue Spring/Purchased 2/28/2014

2002 Ford F-350 7.3 Crew Cab Lariat Short Box, SOLD 2/24/2014


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