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Car Care Tips - What is a Breather?
 

The breather typically refers to a component of the engine's crankcase ventilation system. The breather is designed to allow the escape of gases and pressure that build up inside the engine crankcase.

The engine crankcase is the lower part of the engine block where the crankshaft is located. As the engine operates, it generates gases and fumes due to the combustion process and internal friction. These gases, along with some amount of oil mist, can accumulate in the crankcase, leading to increased pressure. If this pressure is not released, it can cause various issues such as oil leaks, decreased engine performance, and increased wear on engine seals and gaskets.

The breather is usually a small valve or vent located on the engine's valve cover or oil filler cap. Its purpose is to allow the excess gases and pressure to escape from the crankcase and into the intake manifold. This process is known as crankcase ventilation.

By connecting the breather to the intake manifold, the excess gases are reintroduced into the engine's combustion chambers, where they can be burned along with the air-fuel mixture. This helps prevent pressure buildup in the crankcase and reduces emissions.

In summary, a breather in a car is a component of the crankcase ventilation system that allows the escape of gases and pressure from the engine's crankcase, helping to maintain proper engine performance and reduce emissions.
 

 
 


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