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Warm-up Regularor

Fuel System

Model: 911S, Year:1976, Mileage:90000, Type of use:Street use only
In the process of investigating after fire on my 1976 911, I was checking the vacuum connections of my warm-up regulator. I have good vacuum going into it, but the hose that goes to the decel valve shows no vacuum. What should be the normal vacuum expected from this and if mine is abnormal does this mean I have a bad WUR.

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