Spark plug removal

Just to be clear, you got all the other plugs out but now the socket will not fit on just this one plug.

If that is the case, I have to assume there is either something down in the hole that is blocking the socket, or the plug broke off.

Here is a guide that will help with gapping the plugs if you need it after we get this out:

https://youtu.be/c9_NVXiwvYg

Is there a way that you can shine a pen light down the hole and see if there is anything visible?

You can also use a borescope if you have one.

I attached the process below in case you or others need it.

Please let us know if you find anything in the hole and we can come up with other ideas. Worst case you will have to remove the head in order to get it off.

Let's start with this and see what we can come up with. Thanks