ok well my 99 miata has been in the shop twice for the clutch and it is still acting up, first time it went in they replaced the master clutch, and the second time they replaced the whole clutch system but the problem is, that whenever i start up my car and push in the clutch it is real loose and will not go in gear i have to pump the clutch alot till it gets stiff then it will go in gear fine. and also when i am driving and have not switched gears in awhile it will do the same thing were i can not get out of gear so i pump the clutch get it out of gear then pump the clutch more to put it in the disired gear. i cant find what the problem is

 

sounds like a leak in either the slave or master cylinder seals. my advice, take it to another shop. even if they are doing the work under warranty, is having your car worth more than taking it back over and over again for problems?

 

I had the same trouble with mine. My rear wheel cyl. was leaking, after it was replaced they did'nt bleed all the air out of the system,
had to pump the clutch to make it work, rebleed the system. Good Luck