[poopipe]

I could measure it but I'm nowhere near my verniers and I am near a tool shop.

the spark plug removing socket thing in the socket set I've had since I was a boy won't fit in the holes atop my engine which is something of a handicap if you want to pull the plugs out to check them.

does anyone know off the top of their head how big the holes are so's I can go buy the appropriate socket today?

ta very much, you're very kind

 

[bert]

Changed my plugs today, think the socket was a 16mm (5/8").

 

[poopipe]

I think the nut bit on the plugs is 14mm actually but its the hole you have to jam it down that's causing me the problem.

it's no bother now anyways - I'm home today and my verniers are within 15 feet of the car.