My car had a bit of a miss when up about 5000-7000rpm. I was due for a spark plug change so figured that was the cause.
Now yet to fire the car up again to see if the new plugs fixed the issue.. but thought I would ask for your opinions with this spark plug from Cyln 4.
See how one of them seems all oxidised..
any idea what would cause that.. it only happened to one and i have never seen it before.