This is on my daughter's 1.5 Fusion 4 cylinder ecoboost. Her check engine light was showing cylinder 3 misfire, so I changed the plugs and the coil packs. Cleared the codes and noticed it was idling a bit rough. Drove it down the road and the CEL started flashing and it is running very rough. New code says cylinder one misfire. Going to recheck my work, but any ideas?