12-07-2018, 03:41 PM
(12-07-2018, 02:27 PM)John Mason Wrote: This might seem a stupid question but if you need a 22 MM spanner to tighten/ untighten your spark plugs does this mean they are 22 MM plugs.
John Mason
Stop me if I'm missing something, but plug 'size' is the size (nominal diameter) of the screw thread, not the 'across flats' nut size.
Just as a 6mm bolt is 10mm across flats, for example, and needs a 10mm spanner to undo it.