Non- MB, but a spark plug problem. Why would I show continuity between the cap and body of a plug? If I'm not mistaken I should only show continuity between the cap and center electrode. The metal body should be insulated from the center electrode by porcelain, correct?
I checked this with a back-up plug from another car, and show no continuity between end cap and body - except if I hold the leads to each with my fingers (then I'm getting continuity through me).
What could cause a plug to "short" like this? I'm off to get a set of plugs, but would like to know what killed this plug.
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.