Hello everyone. As a welcome note, I would like to write that I have already looked through the threads regarding the clutch - e.g. this one ( https://www.ferrarichat.com/forum/threads/456-gt-how-to-bleed-clutch-master-cylinder.506517/ ), but I have not found a solution to my case. it is a 456GT from '94 - the vehicle started normally, gears were engaged normally - the clutch worked properly. One day I got into the car after a long stop, I wanted to start and suddenly the clutch pedal hit the floor. Lost the ability to shift gears. I checked the leaks and there were none. I bought a master clutch cylinder and replaced it - although the old one seemed good to me. Yesterday I tried to bleed the system - and what was my surprise when after unscrewing the vent at the bottom of the box (bleed) - no fluid comes out of it (even when pumping with the clutch pedal). Anyone have an idea what it might be? By the way, I would also like to ask about the cooling system - after starting the engine, the car tends to catch the operating temperature very quickly. Then it comes out on about 3/4 of the scale and turns on the fans. Overall the temperature is below half and the fans are running almost all the time. I am waiting for a timing replacement, I bought a modernized water pump, I also did a cheap test for exhaust gases in the cooling system (negative result) - any idea of this condition?