Whether it's the rattling that comes and goes with the moon phases, a timing belt that obeys only changes in barometric pressure, or the sudden flickering of that dreaded check engine light, certain car problems require the professional experience and honest technical knowledge only a mechanic can bring. This doesn't mean you should be afraid to approach your car with a tool though. There are certain car fixes that every man should be capable of doing himself. Your mechanic might not thank you for learning them, but your wallet surely will.

How to Change an Air Filter

One of the most straightforward pieces of maintenance you can do at home is replace your car's air filter. It's also a great way to improve your fuel economy. All you'll need for this job is a screwdriver, a fresh air filter and rag to wipe your hands off before you pat yourself on the back.

1. Pop the hood and locate your air filter—on most modern cars it's about the size of a loaf of break and encased in black plastic. Consult your owner's manual to be sure where the air filter is located on your make and model.

2. Some air filter enclosures are secured by snaps, others by screws. Use a flathead to pry open the snaps or unscrew said screws. Be sure to keep track of any screws you take out.

3. Take a look at the filter to determine if it needs replacing. Most air filters are good for about 30,000 miles. Give it a shake. If you sneeze, it's time for a new one.

4. Secure your new filter in place and snap up or screw closed the case.

5. Close the hood and congratulate yourself on a quick and easy job well done.

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From: Esquire US