not very long, the system work based on pressure any lose of pressure can cause the system to not function properly. Not to mention the fact that if you run that engine dry you will begin to blow freeze plugs or much worse crack the block...
You replace it.
Time to replace the pump.
Replace water pump.
If it's leaking from the back of the water pump then most likely you should go ahead and replace it because its leaking from the weep hole which tells you basicly that your water pump is about to stop working its a way to warn you before your motor locks up
The way you stop your water pump from leaking on a Ford Transit Lorry depends on why it is leaking. The most common fix is to replace the gasket on the water pump.
When it starts leaking or stops working.
its having its period
Overheating and leaking coolant is a sign of a bad water pump. There is a hole on the bottom of water pumps that allows coolant to leak when they are going out. This is to warn you it is going out so you replace it before major damage is done.
If it's leaking between the toilet and the floor, you put the wax ring in wrong. If it's leaking between the toilet and the tank, you need to replace the gasket.
By bore do you mean weep hole? If so, the seal is leaking. Replace the pump.
No, you don't have to replace your sink, you just have to replace the fixture's seals. That will stop the water from leaking.
You should replace the water pump on a 1999 Toyota Avalon when it becomes worn out. You can also replace it when it begins leaking.