30
Engine - Motronic Subsystems
SSP217_051
The vacuum required to control the variable
intake manifold and the secondary air system
is provided by two vacuum reservoirs. If a
vacuum exists in the intake manifold, the
reservoirs are evacuated via a non-return
valve.
Fitting location of vacuum reservoir,
Audi A8
Fitting location of vacuum reservoir,
Audi A6
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