Here is a video I made when I replaced the valve cover gasket on my 1997 Camry with the 2.2L. I didn't take any close up pictures of the engine when I had it open. I kicking myself for that now. The engine was not sludged, but did appear to have a lot of varnish.
I hope this helps someone.
http://www.youtube.com/watch?v=kxu77uftXok
I hope this helps someone.
http://www.youtube.com/watch?v=kxu77uftXok