In the last year or so I have had the outside 2 plugs come lose a few times.
They seem to go about 1000-1500 miles ish then I start hearing a little puff piff sort of sound.
Often able to see the cap rattling as well.
When checking they have worked out about half way. Left more often than the right but both do it.
Tried torque settings, tried the normal finger tight + 1/4 and tried very tight lol
Thread from what I can see looks good condition. Plugs have been swapped out twice with new ones and also tried swapping middle ones to outside ones. Nothing makes a diff, about 1000 miles later It's lose again.
So, I don't want to use a thread lock as it probably isn't a good idea on plugs. But anyone have ideas on how to stop it?
Not the end of the world, takes 5 mins to sort each time. But can't be good when its lose