The vent hole is referred to as a weeping hole. It's sole purpose is to indicate the failure of the water pump shaft seal. If there is antifreeze weeping from it, then the seal is leaking and the water pump needs to be replaced before catastrophic failure. Which is to say, replace the water pump now, before it becomes a more expensive problem.
Most water pumps have a small vent hole on the bottom side of the pump. Inspect with a flashlight and check for staining (rust or color changes left behind after water runs away from the vent) related directly with that vent hole. Also check for play (side to side) in the input shaft (belt pulley or fan pulley Either of these conditions is an indication of a failed or failing water pump.
The vent is the "hole" where they defecate out of.
vent hole ,ventiduct
it is a vent
The purpose of air vent on pipe works of infrastrucure
The purpose of the vent on the furnace is to ventilate flue gases out side of the house.
The purpose of the vent on the furnace is to ventilate flue gases out side of the house.
The purpose of the vent on the furnace is to ventilate flue gases out side of the house.
Vent
It's a vent.
It's a vent.
The hole in the shell is generally termed the air vent.