I got a miss and a CEL the other day. Code was cylinder 8 misfire. After work I picked up a coil and a plug and tossed them in. Upon pulling the coil, I noticed it had water on it and the well had a water mark like water sat in there a while. I blew the well out before removing the plug and installation of the new one. This car has been sitting a lot over the last four years I think. I can kind of make out where there was an oil change sticker on it and it looks like it was due in 2010. Any one ever seen anything like this before? The car is a 1997 with coil on plug. Thanks!