As in title after i drive the car either for a while or fast i get a smell of burning and a small amount of smoke from under the bonnet. I guess this has somthing to do with the fact that the ECU light is on. I tried to do the paper clip test and all i get is a non-stop flashing of the ECU light. I tried to change spark plugs as my dad said it sounded like it was only firing on 2 cylinders. I managed to swap 3 ok however 1 seems to have had its sides grounded down so i cant twist it out like the others.
1. Any ideas on what is wrong
2. How would i be able to get that last spark plug out to swap now i've started