get a small mirror and look at the underside of the waterpump, you will see a small hole (apox. 3/16") if you see coolant or evidence of coolant leaking from here you should replace your pump. if memory serves me i think there is an o-ring around the water pump housing.....

__________________
Gretchen 1981 240D 4-spd 213,000 mi
1979 240D 4-spd 298,000 mi parts car

1994 BMW 325is
1991 Dodge turbo diesel
1997 ford expedition

BILL