What is essential for an engine to run properly regarding the fuel-air mixture?

For an engine to operate efficiently and effectively, it is vital that the correct fuel-air mixture flows into the combustion chamber. This mixture is critical because it determines how well the fuel combusts, which directly affects engine performance, power output, and emissions. An optimal fuel-air mixture ensures complete combustion, helping the engine run smoothly, produce maximum power, and minimize harmful emissions.

The combustion chamber is where the fuel and air mix before ignition, so if the mixture is incorrect at this stage—whether too rich (too much fuel) or too lean (too much air)—it can lead to poor engine performance, increased wear and tear, and potential damage over time. Therefore, ensuring that the right mixture reaches the combustion chamber is fundamental for engine functionality.