Question about 1991 Mazda RX-7
The same thing happened in my 86 rex the master cylinder was my problem not leaking fluid but plunger inside the master cylinder was worn out letting fluid pass by causing no pressure
Posted on Aug 07, 2008
Sounds like your clutch master or slave has devloped a leak. I can't say specifically for the RX-7's but typically cars like that run a hydraulic clutch setup. A good place to start is checking the fluid level. Since the clutch may have worn the fluid level might be low anyways, but if it appears to be empty or at the very bottom I would be checking for leaks. Master cylinders in my experiences usually leak into the cab of the vehicle. You just need to look up under the dash to where the top of the clutch pedal attaches to the master, sometimes it might be hard to see, so just feel around, if you feel any moisture theres is a good chance thats it. The slave cylinder just jack the car up and have a look underneath, follow the clutch lines down until you see the slave, these will leak externally and be easy to see. Also if either of these parts have been changed recently it wouldn't hurt to bleed the system again. Also if the master has been changed or you are going to change its always a good practice to bench bleed it first. Here is a link on the process http://www.misterfixit.com/brakbld1.htm Its written to do a brake master but they are pretty much identical.
Hope this helps
Posted on Jul 29, 2008
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Posted on Jan 02, 2017
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