[Noahr63]

I have been meaning to replace the valve cover gaskets as well as the pcv valves. While driving in 4 th gear and only under a load such as a hill i have been hearing a rattling coming from the engine. I pulled the driver valve cover to adjust the vavles and it doesnt look to clean. I also noticed that the rocker closest to the firewall i believe its an exaust valve moves left and right on the shaft? How bad is this and whats your opinions on the pics? Any way to safely clean without removing the head.i have yet to remove passanger valve covers.