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I'm sure this means I need a new pump, but I just wanted to make sure here. I have water leaking at a slow, but constant drip from a hole machined right below the shaft. Pictured is a different 390 water pump for clarification on which hole I mean. What would cause water to come from here?
Yes. It's the weep hole that shows that the inner seal, or perhaps the seal inside the bearing, is no longer doing it's job.
It might mean the bearing is going away soon, or it might have some life left in it after all. However, it does indicate that it's time to change the pump.
Just make sure it's coming from the hole, and not from somewhere else that makes it look like it's coming from the hole.
Thanks guys, I figured something like was the case. Time to shop for a new pump I guess. If the dang thing had waited 6 months to go I was going to be pulling the whole engine this winter to rebuild/refresh. I guess it knew that and decided to go now while it would still be a pain.
Well, you could always wait that same six months and see how the leak goes. Like I said, it might take awhile to reach the logical end of it's life.
I normally replace them relatively quickly, but if I was planning to pull and refurbish the engine anyway, I'd certainly put off changing the pump until I had the engine out.
In spite of others’ stories and experiences, and obviously your experience as well, I’ve had very good luck with the stop leak products that I’ve used.
I don’t disagree with you on what people have experienced. And therefore what could obviously happen to anyone.
Just that I’ve used certain brands and under certain conditions and I’ve always had good luck with them.
Almost always stopped the leak, and none created a globby mess for me to work on later.
But for the OP, if it’s not that big of a leak that it’s creating a nuisance in your driveway, don’t bother with stop leaks. Just pull the engine down when you’re ready.
That way you can use the leak as a not-so-subtle reminder! :-)
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