Originally Posted by antpatterson
Well it is the color or oil but if it is water why would it be black? Is this something I should be concerned about? Should I just replace the spark plug?
You should check that the spark plug is not loose. Make sure it is tight and then clean off the gunk and ride it again. If it leaks again and you are sure it's not water getting in the spark plug cavity then you might want to check for oil leaks from within the valve cover.