Hi,
I'm changing the front spheres on my Xantia (W reg 2.0 HDi) myself for the first time, but when I loosened the pressure regulator screw, I didn't notice any noise at all. Surely there should be a hiss or something when the pressure is released? I turned the screw 1 1/2 turns. Suspension was fully lowered prior to this. Engine wasn't running when I loosened the screw.
Cheers,
Marky P.