It could have a hole or sometimes there is a vent on top and if there is too much pressure it will spit it out the vent .
Source : my dad
It goes into the expansion tank connected to the radiator.
expansion tank at right side of firewall(driver side) under hood
the operation of a expansion tank?
If you have a "Leak" from the cap either the cap needs to be replaced or the top of the Radiator is damaged. It is normal for thermal expansion (water gets bigger when hot) to cause the coolant to go into the expansion tank when cars is hot and to be drawn back into the radiator as the engine cools
No, an expansion tank is not required.
heater hose?
there is an antifreeze overflow tank, look on the radiator next to the radiator cap and there should be a smallish hose, follow it and you will find the tank.
In the RADIATOR. Good luck doing that. It goes in the expansion tank. Open cap cool and add. Let warm up and check level.
something.
First thing would be to check if you have enough and correct water/Antifreeze mix in the overflow tank.
It would not perform properly and would possibly blow it's bladder before long.
The system was overfilled and purged the excess coolant.