2001 Sportage Running Rough PO301 Code
I have a 2001 Kia Sportage with 48,000 miles on it. The other day the CEL came on, so I pulled the code and it read PO301 Cylinder 1 misfire! So I replaced all the plugs and the coil packs. When I pulled the #1 Spark plug, it was covered in oil! All over the electrode! I replaced the Spark plug; put a new valve cover gasket on it. Drove it for about 20 minutes and it started running rough and the CEL came on again and it pulled the same code! Any ideas? Something wrong internally? Head gasket, Rings? Thanks in advance for the help!