This car is a rotary, which means you should ignore advice from anyone who doesn’t acknowledge that first.
The RX-8 has an annoying habit of flooding if it is started and shut down before warming up. My RX-8 is sitting in my driveway with this exact problem right now. I suggest investing in a battery charger, as it is a good thing to have with this car. Search YouTube for “RX-8 de flood procedure” there are probably a dozen videos on the subject