Unveiling the Mystery Understanding Oil in Spark Plugs

Oil in spark plug wells is almost always caused by an old perished gasket. After a number of years the gasket shrinks due to constant heating ... I would venture a guess and say it is oil from a leaking valve cover/spark plug tube seal gasket. Its leaking allowing oil to drop on the top ... Oil can deteriorate sparkplug leads and the boot that goes over the insulator of the sparkplug. This can result in missfires. A Spark Plug for Everyone · Iridium TT® – More power, economy, and endurance with the world's smallest tip. · Platinum TT® – Twin tip platinum design with ... Oil on spark plugs can be an indication of a very serious issue. Most likely, bad piston rings or a cracked valve cover. Continuing to run the ... That's not necessarily true, in most cases, it's the spark plug tube itself, and not exactly the tube seal, because oil doesn't rise that ... It sounds to me like the spark plug tube seals are worn out. Get yourself a set of valve cover gaskets and replace them. It's a fairly common ... The grommet in the valve cover for the spark plug hole is the culprit. You'll need to pull the valve cover & replace. May as well do all of them ... Good to hear the oil on the threads is nothing to worry about. I pulled the plug to see how clean she was running. Wiped off the threads and re- ... When spark plugs wells fill up with oil, it typically means the valve cover or seal is broken, which is a simple problem to solve.