yes at one point I think I did that disconnected hose and plugged it but the rpm at idle did not change,also was told at one point to know if I have a vacum leak was to disconnect pcv line and see if I feel suction and if there is I have a vacum leak , i did it and did not feel any suction. when I hooked vacum gauge up had about 13 lbs @ idle but was bouncing around a bit say 12 3/4 to about 13 1/2 I do not know if that is normal.needle was not steady.