Mazda Repair Questions? Ask Mechanics for Answers ASAP
you can start by trying to add fluid but it sounds like you have a leaking slave or master cylinder. how many mile are on your rx8?
have you ever changed the clutch out? and when you add fluid it will still be down aways you will need to pump the pedal about 20 times and see if that helps you get the vehicle in gear if it does you have a leaking component normally the slave cylinder but if you get down on the floor and look at the firewall behind the clutch pedal and see fluid then your master cylinder is leaking.
I was trying to answer it but also need to go through a few questons to get a better idea. where do you live that a mechanic works for free?