Water in fresh air box

mine was doing exactly same thing until today. I removed the fresh air box and used central vacuum hose and air hose to clean out drains. I was testing it with water and had let hose run in cowl with not a sign of leak then hose slipped and water started leaking again I finally figured out where it was coming from. Under the hood next to cowl there was a small screw hole and as it turned out it was above the fresh air box. It finally hit me why that hole was there, it is for the clamp that holds the windshield washer tubes which I have not installed yet. Would be an easy fix if that is also you problem. I was afraid it was my wiper seals which I had replaced but they are dry. Hope this helps, Joe