Clean filters enable your car's engine to operate at maximum power by facilitating airflow and blocking impurities from the intake manifold and valve train. To avoid clogs that can compromise your engine's performance, car maintenance technicians recommend replacing your air filters at least once a year. However, if you drive in urban areas and unpaved roads, may you need to replace them more frequently. Here are a few signs that you need to change them as soon as possible.

How to Know If Your Car Needs New Air Filters

1. Coughing or Popping Noises

A stationary car with its engine turned on will produce faint vibrations inside the cabin. However, excessive vibrations and unusual noises indicate that the spark plugs may be covered in soot. This black residue is created when clogged filters hamper airflow in the engine, altering the air-fuel mixture. 

2. Black Exhaust Smoke

Your car's internal combustion engine needs sufficient oxygen to burn gas. When the filters are clogged, the air supply drops, so the fuel doesn’t burn entirely during the combustion cycle. This residual fuel is either released through the car's exhaust as black smoke or ignited by the pipe's heat, which can be hazardous.

3. Decreased Fuel Efficiency

When the filters are clogged, the engine starts compensating for the inadequate air supply by consuming more fuel. Neglected air filters thus cost you more at the pump. If you have a newer car, it likely has a built-in maintenance reminder system. Otherwise, check your manual to know when to schedule car maintenance, including a filter change, for fuel efficiency. 

For all your car maintenance needs, rely on Oak Hollow Tire Car Care Center in High Point, NC. Their friendly mechanics will change your air filters during a vehicle tune-up. They are certified by the National Institute for Automotive Service Excellence (ASE). Visit their website to learn more about their work with filters, or call (336) 841-6553 to schedule an appointment.