2. The EGR valve on the 1998 Nissan Maxima is located on the back of the engine, near the firewall.
3. It is a small, round, black device with a vacuum line attached to it.
4. To remove the EGR valve, you will need to disconnect the vacuum line and then remove the two bolts that hold it in place.
5. Once the valve is removed, you can clean it by soaking it in a carburetor cleaner and then brushing it with a wire brush.
6. Once the valve is clean, reinstall it in reverse order of removal.
