Like ya do on other vehicles, take the old ones out and put new ones in.
You should have two different spark plugs in your rotary. I can't remember what the numbers are but they are NGK laser cut platinum and look unlike any other kind of plug you've ever seen.
Your local O'reilys or pep boys or what ever your area has should be able to get what you need
4 in total.
when do you change spark plugs
4 plugs 2 leading 2 trailing.
To change the spark plugs in a Mazda RX-7, first ensure the engine is cool and disconnect the battery. Remove the spark plug wires or ignition coils, then use a spark plug socket and ratchet to carefully unscrew the old plugs. Inspect the old plugs for wear, then install the new ones, making sure to torque them to the manufacturer's specifications. Reconnect the spark plug wires or ignition coils and reconnect the battery to complete the process.
To change the spark plugs in a 1997 astro van do I have to change the spark plugs from the bottom of the engine/
4 plugs. 2 are leading and 2 are trailing.
How to change the spark plugs
how to change spark plugs on a 2001 expedition
the proper plugs come pre-gapped. you do not need to adjust them.
2002 galant , can't find the spark plugs
How do you change the spark plugs in 2001 lexus rx300?
how do you change spark plugs on 1995 Lexus es300