Skoda Fabia I (LHD) 2001 model with 124.000km on the clock.

1,4 8V 50kW (engine code AQW)

ABS, with brake servo

The past weeks I've had to top up the brake fluid reservoir twice, something that should ring every car-owner's alarm bells. At the moment, I've already had to dump in 0.5 Liters. I'm very cautious and looking for leaks all the time, but too stupid to stop driving, so I have to fix this fast.

I've visited some workshops but I none have time within a week, so I started looking for a solution myself.

There have been no apparent leaks under the car, so it must leak somewhere inside the car. And so I found it in the pedal box. It's not exactly squirting out, but it is obviously leaking:

I immediately concluded a broken brake master cylinder so I started an order process for it and it seems like I could have one in my hands within 2 days.

But then I suddenly realised that I have a brake servo. How could fluid be leaking through the servo, which is supposed to have a membrane in it that should in theory prevent oil from going though?

I can confirm that the brake servo is working, as the pedal sinks when turning on the engine with a pumped up pedal.

Let me point out that the clutch cylinder and pedal are completely clean, no leak there.

Am I looking at replacing BOTH the master cylinder as well as the brake servo?

Edited 13 November, 201213 yr by JvdP

I'm dearly sorry but I posted this in mark II forum, it should have been in mark I. I've made a new topic there so this one can be deleted.