Small Leak from Water Pump Weep Hole Tolerable?
I have a replacement new water pump, with about 3K miles on it. I have it torqued to the proper specs, the new belts were adjusted to new and then readjusted to "used" specs with a Krikit as per the manual, and I use the right mix of MB/Zerex G-05. I have a tiny - I mean, tiny - leak coming from the lower weep hole of the pump. In a month of this, I've seen no drop in my expansion tank; but I can tell the pump is leaking a little because of the residue left on my (polished) parts like the water pump, alternator, power steering pump, etc. This seems to happen if I drive the car, let it sit for a few hours, and drive it again. I've never actually seen any liquid but I have felt the weep hole damp after driving.
Again, I'd be surprised if the total amount of the leakage over the course of a month (driven lets say every other day) has amounted to a thimbleful, and I probably would not have noticed it on unpolished parts. Does anyone think this is serious? Enough to replace it? Gee, I hope not... |
Obviously, it shouldn't be leaking at all. Whether or not it's bad enough for you to change it again is up to you.
You might wan't to make sure your cooling system isn't being over pressurized due to a bad expansion tank cap or worse yet, a leaky head gasket. |
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Could that damage a water pump? Excess heat can do all sorts of things, but in this situation it would appear the problem is a leaky pump which happens to be brand new. My $$$ are on the pump being bad. It happens. |
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Check for oil in the coolant. Steve |
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As to the original problem statement: Bad water pump, excessive clearance on the pump shaft seal. It may be acceptable for now, but eventually it could lead to bearing failure on the waterpump (which BTW is lubricated by the coolant). If temperatures are OK, and leakage is minimal / non - measurable, then just keep your eye on it and plan on replacing it when you can. If you get more concerned with it, take the tension off of the belt and try to wiggle the pulley. If there is any wiggle, then replace the waterpump ASAP. If the leak rate increases, or temperatures increase, then replace ASAP. |
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Given this summer, wonder how I'll tell when temperatures are creeping up:) If I'm in motion, the car sits at about 84; standing still after coming off an expressway, it can go to 95 until I start moving again, if the temperature is over 80 outside. From what I hear, this is downright cool for this car:) |
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Note that it was still pumping just fine, though the pump impeller was probably wearing into the pump case at that point. (I never did an autopsy on the pump like I normally would have...I guess I just figured broken is broken...) Try washing the white residue at the weep hole away and see what happens. I have heard of some shaft seals that need a bit of run in time before they start sealing well. On other cars I've owned, they were sensitive to the anti-freeze / water ratio. Too much antifreeze resulted in poor sealing and poor heat transfer, not enough anti-freeze resulted in poor lubrication to the seals and eventual leaking... |
i would return the pump. at three months it should not be leaking. bad pump. i wouldn't drive with it that way.
i would worry about being stranded. tom w |
My new replacement started leaking after about three months too, but it also started squeaking. A small leak I could handle but the noise I couldn't. The pump was under warranty but my labor wasn't
Rule of thumb: If you don't know how old the thermostat is, change it. Another rule of thumb: If you don't know how old the radiator cap is, change it. |
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