If the adaptors all remain in the cylinder head you should a) do a happy dance and b) buy a lottery ticketShould you routinely remove the plug adapter each time you replace your 14mm spark plugs or just leave them in?
If the adaptors all reman in the cylinder head you should a) do a happy dance and b) buy a lottery ticket
Why would you need to take it out. ONLY if it is damaged.
Remove only the plug to service the plug. If you need to remove the adapter, install a plug first before removing the adapter to keep from the adapter failing.
I installed mine once, 15 years ago.
Any way to safely "encourage" the adapter to stay in? I was 8 for 8 with the adapters coming out. (I even purchased the 14 mm extensions kits for my compression tester and never used) The plugs where not easy to extract out of the adapters.