Help! terrible fuel mileage - Ford Powerstroke Diesel Forum
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post #1 of 7 Old 05-31-2011, 06:58 PM Thread Starter
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Unhappy Help! terrible fuel mileage

Ok, so i have a 97 f 250 with 200,000 it has exhaust, chip (ts) and intake.. the truck has 35's and 3.55 gears. i just bought truck, so today i traveled to a town 70 miles a way with a empty 16' trailer my egts stayed around 1200 Degrees and i burned half a tank each way... Where should i start what could be wrong please help!!!!!!!!!!!!!!
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post #2 of 7 Old 05-31-2011, 07:03 PM
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check your fuel filter? intake filter? those could possibly have something to do with it

-Kris-
2011 f150 ecoboost 4x4 323/452 on php dyno 11/16/13
1995 CCLB DRW 324K
2001 CCLB DRW 319K
Dp tuner infinity, exhaust, intake, chipped, tricked, and wrecked


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post #3 of 7 Old 05-31-2011, 07:41 PM
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Crap! What program were you on?
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post #4 of 7 Old 06-01-2011, 06:29 AM
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Check for boost leaks and exhaust leaks at the up pipes.

97 F350 CCLB 4x4 PSD
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post #5 of 7 Old 06-01-2011, 02:42 PM Thread Starter
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Smile

ive tried all positions on kt performance chip.. i just relaced fuel filter and air filter..... thanks for the replys keep them coming
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post #6 of 7 Old 06-01-2011, 02:47 PM
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With your EGT's at such a high level,I would think lowering these temps should help with mpg's. Gotta a dp ?

1996 F250 PSD Crewcab,auto,D 60 swap,3" dp, DIY air 4X4 Centurion
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post #7 of 7 Old 07-18-2011, 01:40 PM
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make sure that the fuel filter is really tight. I changed my fuel filter a time or two and didn't tighten it enough and had crappy mpg.
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