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Fuel milage issues

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Old May 2, 2016 | 12:51 PM
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Chuckewald
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Fuel milage issues

My 1999 250 super duty was getting about 400 miles to a tank. Then my truck started acting funny every time I key up my cb and now my fuel milage sucks. I also just replaced the electric fuel pump last week.
Any suggestions!?!? It's a 7.3 diesel
 

Last edited by Chuckewald; May 2, 2016 at 01:10 PM. Reason: Engine size
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Old May 2, 2016 | 12:59 PM
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texastech_diesel
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Saying which engine would help.
 
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