Ice that forms inside the carburetor due to fuel vaporization is known as:

• A. Carburetor Ice
• B. Wing Ice
• C. Ice in the intake
• D. Induction ice

Answer: (A)

Carburetor ice forms when moisture in the humid air freezes inside the carburetor as the air passes through the venturi and the fuel vaporizes, cooling the mixture. The ice builds up on the throttle plate and inside the venturi, constricting the airflow and disrupting the air‑fuel mixture. That’s why power can suddenly drop and the engine can run rough.

This is specific to the carburetor itself, not the wings. Wing ice coats the wing surfaces and affects lift, while induction ice is a broader term for ice in the entire intake system, not necessarily inside the carburetor. Ice in the intake is too vague to pinpoint the problem.

In practice, you’d recognize carburetor icing by a noticeable loss of RPM and roughness in moist, near-freezing air. The fix is to apply carburetor heat to warm the air entering the carburetor, melt the ice, and restore normal operation. Once the engine is running smoothly again, you can adjust back to normal operating settings and monitor for any recurrence.