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?