Originally Posted by Kmsmith
Yes I know how to get to it
Check your valve positions, particular the bypass valve that ties the cold and hot water lines together for winterization purposes. I bet you may find the valve is in the wrong position, or not fully closed.
it's easy to confuse the position of the valve, since the water line is usually running vertical for this valve. The link I provided, as well as the diagram Ford Idaho shows above, shows how you want the valve to be. Let us know what you find, or if you can take a pic of it all to post.