Toyota Repair: 1999 toyota camry, toyota camry, pipe wrench

Question
I have a leaky spark plug tube, I think. how do I repair this problem? i'm trying to repair what I can before I get trapped at the crossroads. Thanks for your help.

Answer
The spark plug tubes are removeable, they are threaded at both ends, remove the valve cover by removing the four large retaining nuts, after the cover is off remove the tubes by turning them counterclockwiseusing an inside pipe wrench or other tool to turn them. When the tubes are off clean the threads on the tubes and the head and apply silicone based sealer to the threads at the threads that go into the head and reinstall them and using a new gasket on the cover reinstall it, tighten the retaining nuts a few times until the cover gasket is seated on the head.