Spark plug socket

[cavell]

I thought my 16mm sockets wouldn’t fit on a 5/8” spark plug. Turns out I was using my 15 mm socket. Whoops.

 

[cavell]

I had new plug in hand and put it into socket. And walked out in driveway and socket would not fit on plug in motor? WTH? Went to tool box and grabbed 17mm socket but it was too loose. I think I might have set down 16mm and grabbed 15mm but I don’t recall.