Re: Noisy v8 water pump?

Posted by Scott On 2020/11/21 16:32:39

One trick to check for belt noise, with the engine idling and the belts tensioned properly (not too tight or loose), CAREFULLY apply a bar of soap to each side of the fan belt. This will usually quiet a noisy belt at least temporarily.

If it's not the belt, pour a can of water pump lube into the radiator. It will quiet a noisy bearing and prolong lifespan.