How To Replace The Engine Air Filter
On most cars the air filter sits in a plastic box with clips or a few screws, which makes this one of the easiest services to do yourself.
DifficultyEasy
TimeAbout 15 minutes
AreaFilters
What you need
- New air filterThe exact part for your engine.
- ScrewdriverOnly if the box is held by screws.
- Vacuum cleaner or clothTo clean the box.
Step by step
- Find the air filter boxA large plastic box connected to the intake duct, usually on top or at the side of the engine.
- Open the boxRelease the clips or undo the screws. Note how the cover sits.Do not disconnect the mass air flow sensor plug unless it is in the way, and never touch the sensor element.
- Remove the old filterNote which way it was fitted.
- Clean the boxRemove leaves and dirt without letting it fall into the intake side.
- Fit the new filterMake sure it sits flat and the seal is all round.
- Close the boxRefit all clips or screws so that no unfiltered air can get in.
When to go to a workshop
If the box is hard to reach, or the engine runs badly after the change, have it checked. A filter that is very oily can point to a crankcase ventilation problem.
Questions about How To Replace The Engine Air Filter
How often should the air filter be changed?
At the interval in your service schedule, sooner in dusty conditions.
Can I clean a paper filter with compressed air?
It is not recommended: it can damage the paper. Replace it.