Bad water pump

[Deezelcaddy]

As some of you may know, I am doing a motor swap. It has been a struggle but I finally got it all bolted back together. The last thing I did was filli the antifreeze. In the process (about 3 gallons in )I heard a drip. Coolant is dripping out behind the harmonic balancer. I'm guessing the seal is bad and it's leaking out the weap hole? Could it be anything swap related? I just wanted to confirm my suspicions before I tear this thing apart again. Also, will there be much coolant loss at this point when I tear the pump off? It's days like this a truck payment doesn't sound too bad.
Thanx in advance for any help.

 

[IDIoit]

my advice...
take that junkyard engine and change every damn seal and gasket.
changing the front and rear seal while its in the truck is a PITA.
if youre running a turbo, i would learn from USNENFTS, pull the heads and change head gaskets also.
theres nothing more satisifying than opening your hood to a nice clean fresh gasketed and painted engine!!

would have been alot easier to do when it was out

 

[Deezelcaddy]

I did the gaskets and seals but the water pump looked new. Not even surface rust. Believe me, I am kicking myself now. Wanna know the best part? I have a brand new motorcraft pump on the shelf! Looks like I'm going to need to use it.

 

[IDIoit]

oops!
well atleast it isnt something major.