Hi,
I need confirmation. At the beginning of the post, you indicated it was losing coolant but there were no leaks. In the end, you mentioned it wasn't leaking or using coolant. Has it changed?
As far as the water pump, yes that is where you will see a leak. However, before I would be recommending going to that trouble to find it may not be bad, I would recommend pressure testing the system to see if there is a leak. Here is a link showing how it's done. You will need a pressure tester, but most parts stores will lend one to you.
https://www.2carpros.com/articles/radiator-pressure-test
Also, if there was a point where it was losing coolant but you didn't see any leaks, by any chance did you notice white smoke from the exhaust?
Let me know.
Joe
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Thursday, August 17th, 2023 AT 7:18 PM