Hi
Having been where you are, I'm in a good position to advise.
When you press the clutch pedal, does the slave piston move at all? If it doesn't then you've got air in the system still. If it does move, about 1 1/2 - 2 inches, then the hydraulics are fine, and it's the clutch itself.
What happened for you to change the cylinders? Did the slave piston stop moving, or was it just that the biting point was at/ near the floor at the pedal?
The part at the bulkhead is an additional bleed nipple, which you need to get free of air first, before moving on to the slave cylinder. To help bleed the system, I used a foot pump and section of inner tube with the valve to get pressure at the header tank, in order to push the fluid through. I then opened the bulkhead bleed nipple until the air was gone. Then you move to the slave piston, where the bleed nipple is moulded into the plastic body, so it doesn't unscrew. You have to remove the circlip/ wire clip and push the fitting out of the body. Be careful as there are 2 small o rings which tore on me, causing the fluid to leak past and loose pressure.
I had my assistant push the clutch pedal, while I held this fitting together. Once the pressure is behind it, you can let it separate slightly, releasing the air. Once this happened, push the fitting back together, and release the pedal. Keep repeating this until the air has gone. Refit the clip and all should be okay.
I'll provide more advice as to your response.
Cheers
JamesAtthews
