A6 Quattro Wagon V6-3.0L (AVK) (2002)
Exhaust Pressure Regulator: Testing and Inspection
Exhaust Flap Vacuum Reservoir, Checking
Exhaust Flap Vacuum Reservoir, Checking
Special Tools and Equipment
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VAG1390
Test sequence
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Disconnect hose from vacuum reservoir for exhaust flap at rear muffler.
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Connect VAG1390 hand vacuum pump to vacuum reservoir.
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Operate hand vacuum pump.
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Linkage must move toward left
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Linkage must move toward right
If linkage does not move:
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Check whether linkage moves easily or check vacuum reservoir for proper seal.