Brake Servo Fault?

Post by **LeeCarey** » 20 Mar 2006, 16:38

T25 1984 CU engine

My engine refuses to tick over properly. If I disconnect the vacuum pipe to the servo it's OK and so I suspect that the pipe or servo is faulty.

Is there anyway that I can check if the servo is definitely faulty?

If it is found to be faulty are they still available and from where ?

Ta very much

Post by **andysimpson** » 20 Mar 2006, 21:10

Are you blocking off hole on manifold when pipe is disconnected?

Air leaks on servos and pipes are normally easy to find, just listen for ari being drawn in

Post by **LeeCarey** » 21 Mar 2006, 09:56

Yes, blocked off hole to manifold and runs fine. Its just with the noise of the engine I'm having trouble locating the leak

Post by **Mocki** » 21 Mar 2006, 10:21

switch the engine off, and blow down the pipe, but dont suck.
normally the flex pipe at the manifoold end goes , or the non return valve. both look ok, but leak. its not often the long pipe from front to back ime

Post by **Aidan** » 21 Mar 2006, 10:21

Suspect the flexible hose that attaches to the manifold, it's reinforced with wire which rusts and causes pinpricks. If you spray some carb cleaner on it (or anywhere yo think there's an air leak) then the revs will pick up as the carb cleaner is pulled in with the air and richens the mix.