Practice question

'Decarbonising' (membuang karbon) an engine's combustion chamber and piston crown refers to...

  1. Removing carbon deposit build-up that can reduce engine efficiency and cause knocking
  2. Replacing the carburettor with a fuel-injection system
  3. Adding extra carbon fibre parts to reduce engine weight
  4. Charging the battery using a carbon-based charger

Answer: A — Removing carbon deposit build-up that can reduce engine efficiency and cause knocking

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