So I got CEL code indicating misfire on cylinder 4, and the car was hesitating on low RPM under load.
I had replaced all the ignition coil less than 1000 miles ago with Beru coils. I pulled the one from cylinder 4 out, and saw that it was cracked badly!
I replaced it, and the car runs fine now. But I was wondering what might cause this...just a defect, or is there a root cause that I should look into?
