On a 2004 Neon RT 2.0 SOHC we had an issue with one of the rockers. When we took the valve cover off to replace the rocker, we noticed that there was no baffle in the valve cover. There were large peices of tin sitting against the outer walls of the head. It was obvious the baffle had been destroyed some how.
One of the problems we're having is that there is a lot of oil coming from the valve cover into the air box. I'm not sure if this line is supposed to be a breather or a PCV. There is also what I assume to be the EGR which goes from the side of the valve cover down into the intake.
About 2 weeks ago we got another valve cover with a baffle. There is still oil getting into the air box even with the baffle. Should either/both of these these outlets be a check valve?
The air box has a built in holder for a sponge that collects the oil coming from the back of the valve cover.
Any ideas? Why, with the baffle, is there oil still going into the air box?