The Function of an Air Filter in a Car

The air filter in a car is placed in the air intake path of the engine and removes harmful particles such as insects, dust, and to some extent moisture from the air consumed by the engine.

Why Should We Use an Air Filter?

If the air is not filtered, suspended particles and pollutants can enter the car engine, causing wear and erosion of essential engine components such as valves, bearings, piston rings, and the inner cylinder wall.

Types of Air Filters

Air filters are divided by material into two categories (cellulose and felt) and by shape into three categories (panel, cylindrical, and sport).

Effects of a Poor-Quality Air Filter

The performance of an air filter in a car is similar to the function of lungs in the human body. Low-quality, cheap filters without standards are not a good choice. Poor-quality filters are made from unsuitable raw materials, which can cause serious damage and costly engine repairs. Such filters can lead to excessive fuel consumption, reduced engine power, and oil burning. Over time, these filters deform and lose shape due to exposure to gases and moisture in the air.

Weaknesses of Low-Quality Air Filters:

1. The sealing gasket around the filter, if made from unsuitable material, cannot seal properly, allowing particles to bypass the filter and enter the combustion chamber.
2. If the filter paper is of poor quality and lacks standard pores, either particles will pass through or airflow will be insufficient.

What Is the Lifespan of an Air Filter?

Timely replacement of the air filter increases the engine’s lifespan. The recommended replacement interval is usually specified by the manufacturer.

However, weather and environmental conditions significantly affect the replacement interval. In polluted, dry, and dusty areas, the lifespan of an air filter is shorter due to a higher chance of clogging. The standard replacement interval is every 3,000 to 5,000 kilometers, depending on the operating environment.

What Happens If the Air Filter Is Not Replaced?

Failure to replace the air filter on time may cause the following issues:

• Increased fuel consumption
• Failure of the engine to start
• Spark plug malfunction
• Poor acceleration
• Illumination of the check engine light
• Emission of black smoke from the exhaust

How to Install an Air Filter?

Accessing the air filter for replacement in most vehicles is easy and does not require special tools. Find the appropriate filter for your car, open the filter housing, remove the old filter, and install the new one. Place the new filter correctly, close the housing, and ensure the engine runs properly with good airflow.

It should be noted that in light vehicles, air filters cannot be cleaned and reused. After use, they lose efficiency and must be replaced.