Vectra 2004 v6 Diesel estate.
It failed the MOT on a rear o/s brake leaking.
Brake was replaced. Picked car up and I notice the brake peddle with engine running has more travel than it did.
Not bled properly I thought.
Turned the engine off. then the brake peddle goes hard when pushed as expected as no servo action.
Start the engine again and the brake peddle slowly sinks to the floor (almost). Is this leaking master cylinder seals, assuming there are no other leaks of course? Just air, as the servo will be adding a considerable compression?
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