Practice question

What is the purpose of the high-tension (HT) lead (spark plug wire) in an ignition system?

  1. To deliver fuel from the tank to the engine
  2. To carry the high voltage from the ignition coil or distributor cap to the spark plug with minimal electrical leakage
  3. To cool the engine cylinder head
  4. To measure the engine speed

Answer: B — To carry the high voltage from the ignition coil or distributor cap to the spark plug with minimal electrical leakage

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