On small passenger vessels which type of internal combustion engine carburetor does not require a drip collector?

Correct Answer: Option C — Downdraft

Downdraft carburetors are designed so that any fuel overflow or backfire is naturally drawn into the intake manifold by gravity and engine vacuum. Consequently, they do not require the external drip collectors mandated for updraft carburetors, which are prone to pooling fuel in the air intake housing.