ok.
my car was leaking coolant around christmas time from the underside of the waterpump.
i bought a brand new waterpump from checker and new gasket as well and put silicon between them and put the assembly on. then 3 weeks later i get the same leak from the same place (on the underside of the housing where the seap hole is!)
now last week sometime while i was on freeway i heard the ticking sound. first time i have ever heard this sound before.

here's my question: is the water pump bad again? should i return it back to checker and get a new one?
is it my engine ?
would a bad thermostat have a role in this?