97 suddenly dropped fuel mileage - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 1 (permalink) Old 05-22-2019, 05:56 PM Thread Starter
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Join Date: May 2019
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97 suddenly dropped fuel mileage

Hey, I'm new here. I have a 97 with 298k miles on it. Literally in one day my mileage went from 16 mpg down to about 8 mpg. Its not blowing any smoke, and there's no difference in power. There are also no leaks as far as I can tell. Any thoughts/ideas?
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