i got a ses light today and the car was sputtering so i went to autozone and get the code read. i figured it was a misfire, it was #8. so i got a coil. i have some spark plugs at home so i didnt get any of those. anyway, i changed the plug and when i took it out it was covered in oil. i mean soaked. that mean there is a leak somewhere? i didnt change the coil, just put the old coil back on to see if that would fix it, it didnt. so tomorrow i will put the new coil on. any suggestions or reasons for the oil being all over the plug? could that be causing the misfire?

 

You either have a bad valve seal or a bad head gasket. Check to see if your dip stick and/or coolant tank looks like a milkshake. If you can, do a leak down test w/ the valve cover off "see" if you can hear air coming out of the valve seals for that cylinder. You may have bad rings but that isn't the likely problem though a compression test would prove that.