Yah, I'm sure there isn't anything getting in it as far as pressure wise, the cap would blow into the overflow before pump failure, just starts leaking out of the weep hole. I'm buying factory pumps. This one literally has maybe 2-300 miles on it, granted I've floored it a lot during that time, but didn't have a problem for a few thousand miles on the other one, first one was the plastic wheel one and second one was metal wheel pump. Anyone using a "performance" pump?
. Take it to a shop or your pistons might see jesus.