pont
+1y
there is a baffle on the bottom of the valve cover that has a plate covering it. if you take it off and look at it you will see thats were the PVC comes off of and the little hole your talking about. When I had mine off I took it apart and got all the gunk out. There was lots in there all most to the point of stopping it up. even more so up by the PVC. It might be something to look into