A Spark Plug Tube is threaded into the cylinder head. And, has a seal that prevents oil under the valve cover, from accessing the spark plug. The spark plug tube is solid, but the seal can deteriorate and begin to leak.
Leaks
Valve Cover Gasket Leaks – There Are Common Warning Signs
Stopping valve cover gasket leaks, between the valve cover and the cylinder head, is very important, for many reasons. Above all, the valve cover gasket needs to do it’s job, without any flaws. But, valve […]