If your air filter gets too dirty or clogged, your engine won't be able to suck enough air into the combustion chambers. The engine will then run rich (i.e., too much gas and not enough air). When this happens, your car will lose power and run roughly. Your Check Engine light also may come on.
Make note of these symptoms that indicate your air filter needs replacing:
- Reduced fuel economy.
- Misfiring engine.
- Unusual engine sounds.
- Check Engine Light comes on.
- Air filter appears dirty.
- Reduced horsepower.
- Black sooty smoke or flames exiting the exhaust.
- Smell of gasoline when starting the car.
A fuel filter is a filter in the fuel line that screens out dirt and rust particles from the fuel, normally made into cartridges containing a filter paper. They are found in most internal combustion engines.
But what's more likely is that a dirty air filter will deprive the engine of just enough air to hamper performance. Research with modern, fuel-injected cars shows that a filthy air filter can significantly rob an engine of power, but won't affect fuel economy all that much [source: Norman, et al].
The engine air filter should be replaced between 15,000 and 30,000 miles, depending on driving conditions. If you drive on unpaved roads, it needs to be changed more often. If you don't drive a lot, an air filter should be replaced at least every 3 years, as with age it becomes brittle.
Make sure you know the warning signs of a failing filter so you can have a better sense of when it should be replaced.
- Gas Mileage.
- Misfiring or Missing Engine.
- Unusual Engine Sounds.
- Service Engine Light.
- Air filter appears dirty.
- Reduced Horsepower.
- Black Smoke or Flames Exiting the Exhaust.
- Gasoline Smell.
Your $20 oil change doubled its price in just a matter of seconds. I've seen mechanics charge anywhere from $18 to $25 to change an air filter. About the same price as an oil change. The air filter itself is only about $10 for most vehicles.
An oil filter is a filter designed to remove contaminants from engine oil, transmission oil, lubricating oil, or hydraulic oil. Oil filters are used in many different types of hydraulic machinery. Gas turbine engines, such as those on jet aircraft, also require the use of oil filters.
Here are averages that might help you know how often you should change the air filter at home:
- Vacation home or single occupant and no pets or allergies: every 6-12 months.
- "Average" suburban home without pets: every 90 days.
- Add a dog or cat: every 60 days.
- Add more than one pet or anyone has allergies: 20-45 days.
Symptoms of a bad fuel filter. One typical example of a restricted fuel filter is a vehicle that cuts out or loses power driving up an incline, such as a bridge. Under load, fuel demand increases and a clogged fuel filter reduces the needed flow. As the fuel filter gets dirty, the fuel pump works much harder.
Maintenance schedules for various makes of vehicles differ on how often the air filter should be changed. On most Chevrolet engines, for example, the recommended change interval is every 45,000 miles, but Ford says it should be done every 30,000 miles on many of its engines.
The most common issue is that the parts in your engine will become too hot. This can cause the engine to run less efficiently, and as time goes on, it can cause the engine components to warp and wear out. Eventually, if the oil is not changed, the entire engine will shut down and have to be replaced.
Dirty or clogged oil filters allow contaminants to sail straight to your engine where they can cause damage as well as affect fuel economy. You also risk blocking the flow of oil to your engine, which could result in engine failure. Protect your engine with a fresh oil filter, replaced every time you change your oil.
I would get that sucker changed as soon as possible. You can get by without changing it of course, but your engine will be trying to burn sludge built up over time that's sitting in the sump. If you want longevity in car engine, change the oil and the filter every 10,000 miles or less.
Well, now Mobil has introduced three new oils. They have a 5000, which is a conventional oil good for 5,000 miles, a 7500, which is a synthetic blend that's good for 7,500 miles, and a full synthetic that's capable of going 15,000 miles for some of those cars that are rated for 13,000 or 15,000 miles.
Regularly priced name-brand motor oils (Quaker State, Pennzoil, and Castrol) are priced from $3.50 to $5.50 per quart. Oil filters can range from $2.49 to $13.99 depending on the size, quality, and the vehicle it is being used on. A quart of generic, or store brand oil, costs from $1.99 to $4.50 per quart.
When we're talking about 2013 and later models, most automakers recommend oil changes every 7,500 or 10,000 miles when on a normal service schedule. That's more than double the conventional 3,000-mile interval suggestion. The longest oil change interval is recommended for all Jaguar vehicles, which is at 15,000 miles.
Costs to replace an engine filter. The cost and labor to install an engine air filter can range in price from $20 to $50 depending on several factors, including the make and model of the vehicle and how accessible the air filter housing is.
The mass airflow sensor tells the car's computer to add the proper amount of fuel based on the air coming through to the engine. A faulty one can increase emissions, cause the car to stall, and decrease gas mileage. You should replace the air filter at least once a year to help prevent the airflow sensor from failing.
Always check your owner's manual to see what the vehicle manufacturer's recommended guidelines are for fuel filter replacement. Sources online estimate filters should be replaced as soon as every 20,000 up to 40,000 miles or more.
When your air filter is dirty, your engine is forced to work harder, resulting in poor fuel economy, higher emissions and, possibly, a loss of engine power. In turn, as a worst-case scenario, a clogged cabin air filter can lead to under-performance of the A/C system, causing weak air flow from the cabin vents.