2000 Cadillac Seville SLS Q&A
2000 Cadillac Seville SLS Question: misfire cylinder 8 64k misfires clyinder 1 4k misfires in same time peroid.
When you replaced the plugs did you notice if the plugs where coated in oil. If you have oil getting into the spark plug tubes you will need to replace the valve cover gaskets to fix your problem and then pull the plugs out and put them back in to remove the oil in the spark plug tubes. This is a common problem on many vehicles that I run into. - Gtryder0408