Sometimes it helps to have someone gentlyish push on the outlet/inlet under the hood while someone pulls on the inside, just make sure the screws are undone. You should be able to move the cover just a bit. Also, if Im not mistaken, there are 2 screws that are a mother to get off, they are offset from the center at the bottom. In mine, I just yanked till they broke, but hey, its my car and frankly I didnt care cuz I was so mad. hahaha. Just sealed it up real good. You might not want to do that.