How does a carburetor work in a Cessna 172?
How the Cessna 172 Carburetor Works. The AVStar LVC-5-4PA and Marvel Schebler MA-4SPA use a float chamber to maintain a constant fuel level. As the throttle opens, venturi suction draws fuel through the main jet and mixes it with incoming air before delivery to the intake manifold. Operating principle Air from the atmosphere enters the carburetor (usually via an air cleaner), has fuel added within the carburetor, then the air fuel mixture leaves the carburetor and enters the inlet manifold, then through the inlet valve(s), and finally into the combustion chamber.How the Cessna 172 Carburetor Works. The AVStar LVC-5-4PA and Marvel Schebler MA-4SPA use a float chamber to maintain a constant fuel level. As the throttle opens, venturi suction draws fuel through the main jet and mixes it with incoming air before delivery to the intake manifold.