Problem with clutch a3 8p

[Stopro92]

Hello everyone, maybe someone will help me here, for which I would be grateful. The problem concerns my Audi a3 8p 2.0 tfsi Quattro, the problem is that it does not always bounce back the clutch, I have already replaced 2x complete clutch with dual mass, 3x clutch pumps and spring pedal clutch, and yet the problem is still the same, maybe someone had a similar symptom? I have no idea what the reason may be ... I will be grateful for any suggestions. Regards.

[Mooti]

Buddy, can you tell me if the sleeve leading from the clutch is ok?
And is the brake fluid clean?

[Stopro92]

The fluid is new, the bushing did not seem loose, the problem is that the pressure seemed to disappear for a while and there was no rebound of the coupled pedal.

[jacekc4]

the system is aerated, check the connections

[Stopro92]

There is no air in the system, I checked many times.

[Mooti]

And there are no different heights of the dual mass wheel?

[Stopro92]

Problem solved.

[Mooti]

How did you solve the problem?