Radiator cap leaking....
So I just replaced the radiator in my 2003 jeep wj
with the 4.7 motor with a parted out radiator from
another one. The new radiator didn't have a cap so
I used my old one...well it started leaking. So I
went to Napa auto parts and bought a brand new
cap and it's still leaking from under the cap. Any
ideas on how to fix this?????