Opel Rallier since 1977
If you didn't drop it, then the plug is too long. Happens..... What plug PN?
Bob, I read somewhere that you said that vacuum pods should hold vacuum and if they leak down they need placed. Is this accurate?You’d need a fairly massive piston dome to strike the spark plug. Looks like it got bumped/dropped. No worries, just put in a set of fresh plugs and call it a lesson learned.