Hi

Having smoke tested the inlet and engine for air leeks i noticed a leek from the egr valve breather.
I was lucky enough to be able to test another valve on another vehicle that did the same.
my question is have i got 2 faulty valves or are they supposed to leek.
With the engine running there is a vacuum leek.
have removed the egr valve to check if its sealing/seating properly and there is no fault but the breather is open to atmosphere.

Has anyone else found this or can anyone tell me if the valves are faulty.
The ecu is reporting map sensor implacable

Martin