Loud hissing sound when pressing the clutch pedal

[Andrew]

>
> > Also, this would make it totally unrelated with the hydraulic
> > problem that
> > the clutch seems to have as the clutch cylinder had air inside. Is
> > it just a
> > mere coincidence?
>
> Yes.
>
> If the noise can be better described as a "sandpaper" noise than a
> hissing, Yes.
> BTDT many times.


The noise is indistinguishable, at least to my ears, from the typical sound
of a worn out (and/or poorly tensioned) alternator belt that makes this
prolonged squeaky noise on those humid mornings in old cars and continues
squeaking for a while or even never stops until replaced.