How do you change spark plugs in 2004 Kia Amanti?

To change the spark plugs in a 2004 Kia Amanti, first, ensure the engine is cool and disconnect the negative battery terminal. Remove the engine cover if applicable, then carefully detach the ignition coil connectors and remove the coils. Use a spark plug socket to unscrew the old spark plugs, and install the new ones by hand to avoid cross-threading, followed by tightening them to the manufacturer's specifications. Finally, reattach the ignition coils, connectors, and the battery terminal.