How do you change spark plugs on Nissan 350z?

To change the spark plugs on a Nissan 350Z, first, ensure the engine is cool and disconnect the negative battery terminal. Remove the engine cover and the ignition coil connectors, then unbolt and take out the ignition coils. Use a spark plug socket to carefully remove the old spark plugs, check the gap on the new plugs, and install them. Finally, reassemble everything by reversing the steps, ensuring all connections are secure.