Changing spark plugs on citroen vtr?

To change the spark plugs on a Citroën VTR, first, ensure the engine is cool and disconnect the battery. Remove the ignition coils or leads to access the spark plugs, then use a spark plug socket to carefully unscrew and remove the old plugs. Before installing the new plugs, check and adjust the gap as needed, then install them by hand to avoid cross-threading. Finally, reconnect the ignition components and the battery, and start the engine to ensure everything is functioning properly.