How to Check Your Own Air Filter
Hello everyone and welcome back to my short series on automotive tools and repairs for the new weekend warrior auto mechanic. In the past we have spent a lot of time on tools but in today's article I'm going to give you some basic instructions for checking your Terminal HEPA Modules. The first thing that you have to do is to find it. On an older carbureted engine you will typically the air cleaner is large and round with a snorkel coming out of the side of it. In newer cars, they typically are a rectangular shape near either one of the fenders.
Once you've located your Air filter for airport, take off the wing nut or undo any other devices that hold the lid of the air box down and once removed you will find the air filter sitting inside. To know if your air filter needs to be changed out or replaced, lift it out of its housing and hold it up to a light. If you can see light through the Primary Filters than it's probably okay. If you can't, try dropping it with the bottom side down to loosen up some of the dirt. If you do this a couple times and still can't see through it, it needs to be replaced.
Because of the importance of your G4 filter you should remember to change it at least once a air or every 20,000 miles. If you drive in dusty or dirty areas, then you will want to cut that service period in half or twice a year or every 10,000 miles.