How do you replace 2006 Kia Optima fuel filter?

To replace the fuel filter on a 2006 Kia Optima, first ensure the vehicle is off and the fuel system is depressurized by removing the fuel pump fuse and starting the engine until it stalls. Next, locate the fuel filter, which is typically found along the fuel line under the vehicle. Disconnect the fuel lines from the filter using a fuel line disconnect tool if necessary, and then remove the filter from its mounting bracket. Install the new filter in the same orientation as the old one, reconnect the fuel lines, and replace the fuse before starting the engine to check for leaks.