I have a check engine light. i got it checked and found #1 coil faulty. Along with that fuel sensor and O2 sensor codes also came. i changed the plug and coil and engine started running smooth and all codes finished. After 1 day it started jerking hard. i checked the power bank and found problem in #2, 7 , 4 and 8 thus i changed all 8 coils and 8 plugs and put new ones from ford dealer.
now engine is running smooth but it vibrates a little at arround 1500-1700 RPM. after running 2 days , check engine light is on.