A Van wrote:Brake servo losing vaccum somewhere.
On your car? Vacuum comes from the inlet manifold via a 1-way valve.
Google up how to test brake servo.
I think it is:
With engine off, press brake pedal a few times to discharge any vacuum (yes basic terminology)
Hold left foot on brake pedal and press down like you are gently braking.
Start engine and rev it to 2000 revs.
Brake pedal should move down slightly.
If it does then the vacuum is working.
This is only a basic test and won't show up and pinpricks in the servi diaphragm........