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Auto information · Difficulty 3

Try this ASVAB-style question.

Choose your answer before opening the explanation. This original practice item is for preparation and does not reproduce an official test question.

Question

Which situation is the best example of spark plug?

  1. Lubricant passes through filter media before returning to engine passages.
  2. A timed electrical spark begins combustion in a cylinder.
  3. The engine computer commands a precise fuel pulse.
  4. Oscillation decreases after a wheel passes over a bump.
Reveal answer and explanation

A timed electrical spark begins combustion in a cylinder.

spark plug is a device that ignites the compressed air-fuel mixture in a gasoline engine. A timed electrical spark begins combustion in a cylinder.