ecoboost misfire (done all of the normal stuff)
06-24-2018, 11:18 PM
#1
ecoboost misfire (done all of the normal stuff)
Pulling the trailer today (about 4000 lbs) up a steep grade and needed to accelerate. maybe 60% throttle in 3rd gear. I could feel the truck misfiring. I replaced all spark plugs about 10k miles ago with Motorcraft plugs (whatever OEM is) and I have a catch can and weep hole. any idea what the issue could be? even when i am driving empty, I can feel it surging at WOT and the cold start idle is terrible.
06-26-2018, 12:18 AM
#2
King Hater
Could be throttle body, coil packs or a cracked plug.
06-28-2018, 11:31 AM
#3
Senior Member
I will also suggest maybe a cracked plug or bad could pack. Any misfire codes?