A while back my car decided to blow one of the spark plugs clean out of the head and thus stripped the threads. I had a helicoil fitted to the plug hole and all was dandy, or so I thought. Went to change the plugs today and when I removed the one in the helicoiled hole the helicoil came out with it.
At the moment I've put that plug back in but the question is how do I remove the plug whilst leaving the helicoil in place? Should I locktite the helicoil in? Whilst the plug was out I tried to remove the helicoil from it but it was stuck fast.
Car is a Rover 214 16v (aluminium head).
Thanks for any help.