What are the symptoms of a bad air filter?

Signs of a Dirty Air Filter

A car air filter serves to clean the air entering the engine. Dust and dirt tends to build up in the Air Filter over time. Signs of a dirty air filter include :

1. Reduced Fuel Economy.

2. Reduced Horsepower.

3. Black, Sooty Smoke or Flames Exiting the Exhaust.

4. Smell of Gasoline when Starting the Car.

Full list on yourmechanic.com

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