spk1

Ok, I just got finished installing new 454 mercruiser longblocks, I have new raw water pumps, but am wondering if I should replace the water pumps on the engine? I was told if they werent leaking leave them alone, is this good advice?

GOODT

If they're new why replace them, stock mtrs no need..... if its not broke ..........ect

Griff

If they are not leaking, there is no reason to replace them. Leaking is the first sign that they are getting bad.

formula31

Raw water pumps or circulating pumps?

spk1

Circulating, the raw pumps are new.

formula31

Like they said, leave them be.