Last weekend, I was trying to replace my spark plug. One of it just not moving at all it stuck in the engine block. So I used a break bar and the patten on that spark plug gone with the socket. I am wondering if anybody have any idea how can I remove that spark plug out now. I am really worried about it will never come out.

 

Are you trying to say that you stripped the corners on the spark plug with a socket? Were you using the right socket?

 

Yup that's what happened on my A4. There are lots of rust round spark plugs. And I am using the right socket, craftsman spark plug only. I think is 5/8 socket. Thank you for ur reply.