Practice question

What is the main purpose of the engine's positive crankcase ventilation (PCV) system?

  1. To increase the fuel pressure
  2. To draw blow-by gases from the crankcase back into the intake to be burned, reducing pollution and pressure
  3. To cool the brake fluid
  4. To charge the battery

Answer: B — To draw blow-by gases from the crankcase back into the intake to be burned, reducing pollution and pressure

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