Checking the Air Filter
You car's air filter is very important since it keeps many parts of your car system clean and free of dirt. It is a good idea to check the filter regularly, as if becomes dirty and blocked, it will enable particulate matter to enter engine's combustion chambers. A clogged air filter can cause poor performance and shorten engine life. You will probably need to change your air filter at least once a year; more often if you drive more than 15,000 miles a year or you live in a dusty area. Although many people leave the checking and changing of the air filter to the garage, it is in fact quite a quick and simple job that you can do yourself.
- The air filter is typically enclosed in a relatively large black plastic casing near the centre-top of the engine, although in older cars it may be set to one side.
- The casing will be held together either by large metal clips, which may simply be prised open, or by a wingnut or several long screws.
- Once you've opened the casing, you'll see the air filter inside; this is usually a bright yellow or orange colour.
- Pull the filter out and hold it up to the light. Bend the filaments back and look inside the crevices to see how much dirt and grime has accumulated.
- Replace the filter with a new one if it looks very dirty, and particularly if the grime has accumulated in the centre section of the filter.
- Close the casing back up and secure it firmly using the clips or screws.
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