Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › 2012 Ford Edge 3.5 poor fuel mileage after changing plugs › Reply To: 2012 Ford Edge 3.5 poor fuel mileage after changing plugs September 21, 2023 at 5:18 pm #1026289 Rahul JonesParticipant Is the hesitation gone now or still there? Do you feel a misfire now? Do you have a scan tool or something similar to read the live data and share tbe fuel trims on idle?