Posted by Bruce in seriously wet BC [108.162.246.56] on Wednesday, October 17, 2018 at 00:26:00 :
In Reply to: Why do spark plugs crack? posted by Jim Lee [108.162.245.181] on Tuesday, October 16, 2018 at 20:32:30 :
Was there colour running down the crack - either black or blueish black? If so the crack happened when the plug was installed or from the heat cooling cycle.
If it was cracked from side to side or shows no colour I would think it happened when it was removed.
I have had loose ceramic right out of the box.