slight miss in the passanger side exhaust and gets really low gas milage? on 2006 Ford F-250 Super Duty

It has the miss all the time while idling and has always gotten low gas milage

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1 answer 3 comments
any codes?
No check engine light isn't on
probably going to be a bad coil. can disconnect coils one at a time, see which one does not change how engine runs. probably best to take to a shop for diag.
Alright thank ya