Practice question

What is the primary purpose of the air filter in an internal combustion engine?

To increase the temperature of the intake air for better combustion
To remove dust, dirt, pollen, and debris from the air before it enters the engine cylinders
To measure the amount of air entering the engine
To add fuel to the incoming air

Answer: B — To remove dust, dirt, pollen, and debris from the air before it enters the engine cylinders

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