As I wrote earlier, my Mk2 lost it’s brake fluids during 6 month winter hibernation. No obvious leaks, so I (and you) guess it went to servo.
Now I added fluid and started engine. At first brake pedal went straight down but after couple of pumps it now feels pretty normal, no spongy.
But there is a short grunt like sound from servo when brake is pressed. Listen the video.
If I close the air pipe of servo air valve with my finger, the grunt disappears. So is it air valve membrane? Or what? Everything worked fine 6 months ago.
It seems usual suspects do not sell air valve repair kits. So do I need to buy whole servo? Is the cheaper uprated brake servo LR18230 ok, or do you recommend the original servo C19612E?
I haven’t driven the car yet, so not sure how brakes behave.
Thanks for any advise,