Hi sit in the drivers seat with the engine off and pump the brake pedal several times this should exhaust the vacuum in the servo, and the pedal should be rock hard hold it down hard and it should not sink any further. with the pedal still held start the engine and the pedal should sink about 25-40%and then go hard again.
If with the engine off you cannot get a solid brake pedal ie it sinks to the floor then this indicates a problem with the hydraulics and probably air in the system.
If the pedal stays hard and does not sink (with the eng off) then it would seem that the brakes would be ok and just require a bit of bedding in
As for the bit of rubber I don't think it would be possible for it to come from the master cylinder through the system past the abs valves in the unit although I may well be wrong on that.
|