Which type of draft pulls air in from the top of the carburetor?

• A. Side-draft
• B. Down-draft
• C. Up-draft
• D. Horizontal-draft

Answer: (B)

Draft direction describes how air moves through the carburetor. When air enters from the top and flows downward through the venturi into the intake manifold, that arrangement is a downdraft design. This top-entry, downward path suits many engines because the air filter and carb sit above the intake runners, allowing the mixture to travel downward into the engine efficiently and helping maintain a stable fuel flow without pooling.

Other types describe different entry directions—updraft pulls air from below the carb, side-draft pulls air from the side, and horizontal-draft involves a horizontal entry. None of those pull air in from the top, which is why they aren’t correct for this scenario.