Golf L4-1896cc 1.9L DSL Turbo (1Z) (1997)
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EGR Valve: Testing and Inspection
Engine Code AHU
Special Tools, Testers And Auxiliary Items:
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US8026 Hand vacuum pump
Test Sequence:
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Remove connecting pipe between intake pipe and charge air cooler.
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Disconnect vacuum hose from EGR valve (in intake manifold).
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Connect US8O26 hand vacuum pump to EGR valve.
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Operate vacuum pump.
The valve plate must lift from valve seat (observe membrane cam via intake opening).
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Disconnect US8026 hand vacuum pump from EGR valve.
Valve must audibly close (valve plate must position itself again on valve seat)
