Update - I should have read my vacuum gauge more carefully. The results were in fact;
Servo outlet - 29 inHg (I think some may refer to this a primary outlet)
Engine mount outlet - 10 inHg (I think some may refer this to the secondary outlet)
I think this means that the vacuum going to the servo is correct (from other threads I think it should be > 25 inHg) but the engine mount outlet seems low to me. As they are from the same pump mechanism I would have expected then to be the same but I am not an expert on this so can anybody please advise.
If the engine mount (secondary outlet) was below spec could this indicate a fault in the pump whereby it was somehow leaking at this outlet and that was also venting the servo outlet which would explain the car's inability to maintain vacuum to the servo?
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