Practice question

What is the function of the canister (EVAP system) in a modern passenger vehicle?

  1. To store engine coolant during hot weather
  2. To absorb and store fuel vapors from the fuel tank, preventing them from escaping into the atmosphere
  3. To filter the air entering the engine combustion chamber
  4. To hold compressed natural gas (CNG) fuel

Answer: B — To absorb and store fuel vapors from the fuel tank, preventing them from escaping into the atmosphere

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