7.3L sluggish and mpg loss - Ford Powerstroke Diesel Forum
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Old 01-19-2014, 06:04 PM
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Exclamation 7.3L sluggish and mpg loss

Hello everyone I'd like to thank you all in advanced, you all know what your talking about and I've been searching around for awhile to figure out whats wrong and I am completely lost so I figured I'd ask the Pro's. But off to the Newb's issues, last year I purchased a 2000 F250 7.3l supercab shortbed and now the truck has 186,000 miles on it and was stock when i bought it. I have an Airaid CAI system (oiled filter), Mbrp straight piped turbo backed exhaust, Edge insight for parameters, and glowshift gauges. I've been chasing intermediate power loss (like fuel issue but not sure) and bad mpgs aswell as vibration in the rear when i make a sharp turn from a stop but more worried about the motor. At times i will be driving down the interstate no problems at like 70mph at 2000rpms at 30% throttle and 40% engine load then it turns into 60% throttle and 70% load to keep 2000rpms at 65mph and truck just don't wanna go. I just got AE and am still learning but ran buzz test when truck was cold EOT was 19F and the injectors all sounded real weak so warmed up truck to 100F and all sounded stronger about equal and had no faults or codes. Ran Cylinder comp. test and same no faults or codes, and KOER test and again no codes. But after i buzz test the injectors there is still a weak buzzing noise until i turn off the key so is that normal? Or IDM issue? I'm completely lost and hope you guys can help me. Thank you
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Old 01-20-2014, 02:11 PM
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Anyone have any idea whats wrong?
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