Hi folks,

I went to pull the plugs to change them out, they all came loose. The #5 plug was loose then started to get tight a few turns out. Any ideas?

Are they the right length plugs? Carbon can build up on the threads and cause them to bind.

Try working it back and forth a few times. Some penetrating oil may help too.

What Dan said. Hopefully it's not cross-threaded.

Also pull it with a warm engine... heat is your friend but don't force it.