I believe I have tried it all so I am here again for help. 1- Replaced clutch master cylinder with new Ferrari part number unit. 2- Have used the MOTIVE Power bleeder and have pumped more than a quart of new fluid thru the system. 3- Have tried the MittyVac system at the pumpkin. The clutch pedal still doesn't offer any resistance and goes all the way to the floor. There must be something I am doing wrong. The fluid coming out at the pumpkin looks clean and clear. Any suggestions will be appreciated.
Dead head, usually air bubble in master cyl. Try cracking the line at the master the and bleeding that. https://www.ferrarichat.com/forum/posts/142562784/
I had a heck of a time bleeding my clutch master after replacing the original leaking one. I tried a bench bleed without success. I ended up finding that if I attached the Motive bleeder at the resiviour, (15psi), depressing the clutch pedal fully, bleeding, then pinching off the Motive hose so as not to suck air back in, I had success. I ran the car four about a week, the clutch pedal didn't quite feel normal, bled again with the same process to find just a few more bubbles. After the last go-round the clutch pedal felt fantastic, never better. Good Luck.
In addition to the other excellent suggestions from Eric & Mike I add that if the pedal is completely “floppy” and offers no resistance then there is a chance that the piston has got stuck at the very end of its travel. It can happen with new master cylinders. If this is the case then sometimes the only thing that can be done is to pull the master cylinder again, disassemble it, put the piston back in position, reassemble and re bleed. Usually banging the cylinder onto a block of wood is enough to bring the piston back. But one time I had to use compressed air to blow the plug out. If you do use air then, be very careful to contain the plug and use low pressure. The plug can fly out at high speed and do serious damage otherwise.
I don’t believe the piston is stuck because I get fluid at the outlet when pressing on the pedal. Kind of messy but still very soft. I will try banging it with a black of wood just in case. Thank you
