Resonance valve M104 HFM

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RichardF

Active Member
Joined
Aug 24, 2013
Messages
662
Car
Sl 320
I'm carrying out some maintenance and I have removed the resonance valve. 94 SL 3.2

It has a rubber nipple by the electrical connection, that just vents to the atmosphere, when I suck it operates the valve. Is this correct? I can't find a loose vacuum pipe it could connect to.
 

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