first turn on the car and add the water to the radiator while the engine is running-- this allows the water pump to work and force the water to all the thirsty parts this will help the radiator and the crankcase fill much faster
If the water is circulating, simply fill the radiator while the car is running. If there is an air blockage, a heate hose that loops up, you can install a T fitting in it that will allow the air to escape. Usually running the car while filling will do it.
fill radiator up the start car after the thermostate opens it will do the trick after running awhile let car cool off then check water in radiator if needed add water if not close it up.
When a car is hot, keep the car running and add water to the radiator. When a car is cold, you can simply put the water into the radiator.
when the enjine was turnoff sometime and then open the radiator and fill it
Just flushing the radiator, no but to flush the system, yes.
maybe my radiator is defective
The radiator of the car must be filled with water upto the brim, so that the engine will remain cool.
Thermostat and radiator
Empty the radiator - and re-fill it ! Car anti-freeze is added to the water in the radiator so, if you drain it and re-fill it, you can add a fresh quantity of anti-freeze into the radiator filler hole.
If your radiator is leaking then you will need to replace it. Additionally, if you find that your car is constantly running hot you will need a new radiator.
Drain the radiator by removing a petcoc on the bottom of the radiator. Then remove all the hoses and lines going to the radiator. unplug the fans, then unbolt the radiator from the top, most cars have 2 little bolts holding it in, then remove it. Then put the new radiator back in, bolt it up, plug the fans in, and put the hoses and lines back on, make sure you do not cross thread the lines if they screw in. Fill it up with antifreeze until it does not take any more. then start the car up, once the car gets hot enough the thermostat will open and it will take more antifreeze. fill it until it is full and put the cap back on the radiator, then fill the overfill bottle to the appropriate mark. when the car is running, make sure the temp. does not jump way up, if it does turn the car off imediatly, it means there's an air bubble in there and the thermostat is not opening and the car will overheat.
You should see the coolant circulating in the radiator when the car is running