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Discussion Starter · #1 ·
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
 

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

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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.
 
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