Sometimes, when I push in the clutch peddle, it doesn't return, it stays down, and I have to put my toe under it, and pop it back up. It even does it when the car isnt driving, just sitting in the driveway. What do you guys think? Slave cylinder, or maybe the system isn't bleed right?

 

Something In the clutch hydraulics is dieing. Either the clutch master cylinder or the slave. I would suggest replacing both. The master often leaks internally, but sometimes you can see fluid leaking inside the car at the firewall by the clutch pedal. Check the rubber boot on the slave to see if it is has fluid in it. In my experiance if you use new Mazda parts you'll probably not have to worry about it again for many years. Some aftermarket brands don't last very long. I wouldn't put it off too long or it will leave you on the side of the road.

 

Best thing to do is replace the clutch slave, master and the rubber line with the stainless steel one. Do all 3 components at once and you shouldn't have to worry about it for another 20 years. What I've often found is if you replace the master or the slave only, the other one soon fails. This is also often true when one replaces the clutch with a new pressure plate. The old hydraulics will soon fail due to the stiffness of a fresh pressure plate.