Hi
I've been reading through some of the previous posts which have enabled me to trace a problem with the brake servo and rough running on my '89 Golf. Thanks !
The clutch cable has worn through a blanking cap on a unused spare feed on what looks like a check valve in the vacuum line to the brake servo.
Plugging the hole under the blanking cap cures the problem.
Does anyone know what this 'check valve' is, what it does and a part number ? Or pointers to a relevent website.
Thanks
John