On my valve cover I am missin' the bottom right screw! I think the mechanic that did my valve adjustment a while back may have forgot it... How much to get a new one? It can't be hard to install. This could be the reason for all my posts about engine trouble...

 

im missing a screw on my valve cover and im not experiencing any engine troubles...but teh screw should be a few bucks (from the dealer) and well you just screw it on and torque to like 8 or 12 ft-lbs