I have just replaced a brand new water pump in my 1991 Ford Ranger/4 liter V6. After letting the seal sit for 24 hours I refilled the radiator then drove it to rebuild some pressure. After driving I parked it back home and noticed it was still leaking,but not from the water pump. It looks like it is coming from down behind the alternator pulley. Pleae help...any ideas. Thakns

 

You need a pressure test done it may be leaking from the intake gasket or head gasket.Maybe even a loose hose clamp.