How to replace the rear spark plugs in 2003 taurus?

To replace the rear spark plugs in a 2003 Ford Taurus, first, ensure the engine is cool and disconnect the negative battery terminal. Remove any necessary components to access the rear spark plugs, such as the intake manifold or engine cover, if applicable. Use a spark plug socket and ratchet to carefully unscrew the old spark plugs, then insert the new plugs, tightening them to the manufacturer's specifications. Finally, reconnect any components you removed and the battery terminal.