If the water pump is brand new it would be a good idea to change the anti-freeze when its installed, so you not putting old anti-freeze throught it but there isn't a set amount of time when you can or can't. Just change it so it doesn't cause problems later on.
You don't need to wait. As soon as everything is sealed up you can pour in the coolant mix.
It can run but if it is leaking coolant it will cause a problem soon.
You probably don't. The water pump is what circulates coolant through the engine block and the cooling system. The engine will soon overheat if the pump is not functioning. This is a bad thing ~
In most cases the bearing goes bad and makes noise then a coolant leak soon develops. most vehicles have what is called a weep hole on the water pump. if the pump goes bad it will leak.
yes, leaking coolant is what happens before the pump totally dies, then you have overheating and possible engine damage soon after the leaking.
Fill both, but only remove the radiator cap when the engine has completely cooled off. Obviously have the water pump repaired as soon as possible.
That's okay in an emergency but you should also be concerned why the coolant is that low. Have a trusted mechanic check it out soon cause you may have a more serious problem going on.
There is a small hole on the bottom of the pump called a weep hole. If you see coolant dripping from this hole, the pump is defective. But it can be defective and not leak. A nosey pump, or one that is simply not moving coolant as it should must be replaced. If you have over 100,000 miles on the vehicle just replace it, as it is due to fail soon.
Start the engine cold with the radiator cap off. You should see coolant flow as soon as the thermostat opens. Check the front of the radiator for debris that may be clogging the cooling fins. If you see coolant flow and the fins are clean, then you may have to get the radiator flushed out. Also is there is any leaking at the weep hole on the water pump, replace it. Is the cooling fan coming on? There may be a possible air pocket trapped in the system also.
The water pump has one main seal, when the pump starts going bad the seal leaks and there is a slim line of coolant that flows downward due to gravity. If you suspect the pump find this line of coolant. When you see drops of antifreeze pooling underneath the car that is the first sign (do not confuse this with the normal water from the condenser(when you run the A/C) which is clear). Next you have to determine from where - easy to say, hard to do in practice. As soon as the coolant drops below a certain level the car will overheat and leak from everywhere. When coolant from the water pump leaks it will evaporate and leave a telltale residue that is easy to see with an experienced eye. This line of residue flowing downward from the main water pump bearing is the key. After the leak develops it will get worse till the bearing lubricant is washed out as well and then the bearing will seize. Once the pump seizes the belt driving the pump will break and you will be stuck.
The two most likely causes are a bad water pump or a bad hose. daner@copper.net It's either your water pump or a bad hose. Try to locate where the fluid is coming out from. daner@copper.net
That is the weep hole for the water pump. It means the seals are bad in the pump, and it has to be replaced. Most water pumps do have a weep hole on the pump itself. If it leaks from there it usually means that the water pump seal is going bad and soon you will need to replace the waterpump. At least that has been my experience. :-( Some water pumps do have holes either on top or bottom of it. If coolant starts coming out of the hole then it's time to replace the pump.