Red I can think of only 2 reasons a water pump will leak at the weep hole (and in ways they're the same thing...sort of): 1. failed shaft seal...this can be caused by a pump which has been sitting on a shelf too long in a really humid area. The shaft rusts and this tears the seal up quickly. 2. a rebuilt pump on which the rebuilder didn't polish and lubricate the seal...or he did and it sat around too long and rusted. Replacing the seal may or may not even be possible. I'll tell you why in a moment. There are 2 shaft seals in the pump...interesting how many people don't understand this. If the rear one fails there's nothing you can do to keep it from leaking out the weep hole. The first image below shows the front seal. You can't see the rear seal and the second image below shows why it isn't easy to fix. You can't normally press that shaft out of the impeller without ruining it. Some people can do it but most people will just tear it up. The mounting and all is the same on these, by the way. Good luck!
~ Jon 1952 1/2 ton with 1959 235 | T5 with 3.07 rear end
