What Does An Air Filter Do?
Prevents harmful debris, dirt and contaminants from entering your engine.
Why Should I Change My Air Filter?
A dirty air filter prevents the necessary volume of clean air from reaching the engine which affects the emission control systems of the car; reducing air flow and causing a too rich air-fuel mixture which can foul the spark plugs. Fouled spark plugs can create an engine miss, rough idle and even starting problems. In addition, a too rich fuel mixture increases engine deposits which may even cause the Service Engine Soon light to come on.
How Can I Tell My Air Filter Is Bad?
A brand new air filter will generally appear white to off white. A visual inspection of an air filter may reveal that the air filter has become darkened or full of debris. A visual inspection can be done by examining the air filter in bright light. However, an air filter can become clogged with dust and even pollen that may not be easily seen.
How Often Should I Change My Air Filter?
Most car manufacturers recommend replacement every 12,000 to 15,000 miles regardless of whether or not the air filter appears to be clean. Cars driven in dusty or frequent stop and go conditions will requires a more frequent check and replacement of the air filter.
Clean Air Filters Save Gas!
A clean air filter will improve gas mileage by as much as 14% and may increase acceleration by up to 11% depending on the make and model of car. This translates to a potential per gallon fuel savings of up to 15 cents. Learning how to tell if your car air filter needs changing will help you keep your car running properly and ultimately save money on gas and repairs.