Aircraft systems and instrumentsQuestion 611 of 934

Which is a disadvantage of a fuel injection system?

  1. Slower throttle response at low power
  2. Poorer fuel distribution to the cylinders
  3. Harder engine starts in cold weather
  4. Difficulty in starting a hot engine
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Correct answer: Difficulty in starting a hot engine

Fuel injection also has vapor locks on hot days. Its advantages include easier cold weather starts and precise mixture control.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 7: Aircraft Systems — Fuel Injection Systems, page 172

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Questions last reviewed: 18 October 2026