Passat Wagon L4-1.9L DSL Turbo (AAZ) (1996)
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EGR Valve: Testing and Inspection
EGR Valve, Checking
Special tools, testers and auxiliary items
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US 8026 Hand vacuum pump
Test sequence
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Pull vacuum hose off exhaust gas recirculation valve
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Connect US 8026 hand vacuum pump to EGR valve
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Operate hand pump
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The diaphragm rod must move toward vacuum connection (observe membrane rod via opening -arrow-)
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Disconnect US 8026 hand vacuum pump from EGR valve
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Valve must clearly be heard to close (diaphragm rod moves toward intake manifold)
