Check for recalls and Technical Service Bulletins, Honda has a bolt problem that on some of the engine will cause damage to the timing belt and its from the water pump, its been a whale but I believe a TSB will prove it. This may be the reason of the Water Pump problem, The radiator problem should not be going bad at this early stage of use, I have seven years on my Toyota Tacoma, 8 years on my Mazda. God Bless