Replacing the air intake chamber in newer automobile engines, the air box is a device that collects air which is transported to the carburetor (or intake ports for fuel injection engines) for use in fuel combustion. A damaged or deteriorated air box can severely affect engine performance and reduce engine mileage, so if your car's air box is broken or worn out it has to be replaced immediately.
Difficulty level: Easy
- Flathead and Phillips screwdriver
- Penetrating lubricant
Step 1: Park your car on level ground and open the hood. If your car has an auxiliary latch (which is usually located under the center of the hood), pull it upward to release the latch.
Step 2: The airbox is usually found either at the front of the engine compartment on the driver's side. If not, it's likely to be on the passenger side of the engine. Remove the lid covering the air box and spray a liberal amount of lubricant on the rubber grommets that hold the air box in place. If the cover is attached to the air box by side fasteners, lift them up to detach the cover.
Step 3: Using the flathead screwdriver, loosen the metal clamp around the intake tube. Afterwards, pull the intake tube from the side of the air box.
Step 4: Remove the screws from the bottom of the air box. Gently tug and pull until the box pops off from the assembly.
Step 5: Install the new replacement air box. It's basically the reverse of how you detached the old air box. Make sure that the clamps and screws are fastened securely to that they won't fall off when the engine is running.
Step 6: Close the hood and test your car.
TIP: You can prolong the life of the air box by cleaning it regularly. Using a can of throttle body/air intake cleaner, spray around the air box including the sensors to remove the dust and dirt. Continue spraying until the box is clean and free of any particulates.