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If no fluid comes out with the slave cylinder bleed screen slackened off (Assume the hole in the nipple is not blocked), then suspect the master cylinder piston is not returning to the "home" position. Remove the tube from the top of the cylinder, and place a 2mm diameter rod into the hole. You can determine if the piston is at the top of its stroke - if it is, gently push the rod in to push the piston to the bottom of its stroke as it may have got stuck. (It may be time to replace the master cylinder seals ??).
Bob

Exminiman wrote: ↑Sat Nov 23, 2024 8:30 pm Sorry to sound pedantic, but can you describe how you are bleeding the system ie are you pumping the pedal etc…

No I just hold the pedal down, unscrew the bleed valve and nothing happens

Crack Pot wrote: ↑Sat Nov 23, 2024 11:25 pm

Exminiman wrote: ↑Sat Nov 23, 2024 8:30 pm Sorry to sound pedantic, but can you describe how you are bleeding the system ie are you pumping the pedal etc…

No I just hold the pedal down, unscrew the bleed valve and nothing happens

You need to be pumping the pedal with the bleed screw open until fluid comes out. Unless you have some sort of non return valve type thing on the bleed nipple this is a job for two people as while one pumps the other has to close the bleed nipple.

This is why earlier I suggested you buy an eezibleed, this uses tyre pressure to push the fluid through.

However, first, if you open the valve and pump the pedal, you should be able to pump fluid through, if not then it’s the master cylinder seals that need replacing.

Do you have anyone with a little more experience able to help you with this? Doing it on your own is OK if you have the correct tools, for example a bleed pipe like this helps to avoid drawing air back in.

https://www.ebay.co.uk/itm/391971960746 ... K7EALw_wcB

It is so much easier with two people though, and the person in the engine bay can keep the fluid topped up as you pump it out too.