Put the cover on the floor, grab a can of degreaser and spray the cover as much as you like until it seems clean, and then just dry it with a rag? You wont damage anything by cleaning the underside of the valve cover either, soo just degrease one side, then degrease the other side....
Your engine is perfectly safe with the hood closed im pretty sure.
the pcv valve area is blocked off with just some holes when you look under the valve cover. i can't exactly get a rag into that area to wipe stuff off.
Bookmarks