so today while drive my car started supptering and i threw a CEL code drove it slow and out of boost code was for misfire in cylinder 2 pulled the spark plug and the bottom of it was all black and where the electrode meets the part where u gap it the little L part that u bend is gone!!! coudnt find it in the cylinder changed the plugs code went away car dropped down and sounded like it was about to blw up then drove it and now it drives fine but my AFR is reading at idle from 16.5 to 10.5 while just sitting there and dont know what to do from here need help on whats my next plan of action