Respiratory Care Carburetor

one of the breathing holes in the carburetor Supra 100

His name respiratory tract, nasal if ya is not good. Holes in the carburetor is working to keep the air pressure inside the chamber aka floating fuel bowl. The channel is connected to the outside air, and the pressure is in the same space with buoys outside air pressure. With the same pressure, the gas flowing smoothly. When clogged would be a problem.
When clogged or closed, outside air can not connect with the room in the carburetor so that the pressure becomes vacuum. Symptoms halting the motor will be in a particular round. Gasoline will not be sucked completely, so that engine performance will be impaired. For this channel is usually connected with a hose so that they can avoid the dirt and water that can enter into the carburetor space. Already using any hose, the hose should be kept clean. For example clogged dirt, such as dust or rain water.