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Volkswagen Workshop Service and Repair Manuals

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Ignition system, glow plug system > < Removing and installing parts of lubrication system

Golf Mk4

Checking combination valve
Checking combination valve
Test prerequisites
l  Hose connections must be leak-tight.
  Note
Do not use compressed air for following test!
–  Remove engine cover.
   
–  Remove pressure hose -arrow- on Secondary air pump motor -V101-.
  Note
To release, press buttons on hose coupling together.
–  Use slight pressure to blow into pressure hose to combination valve. Combination valve must be closed.
–  Use high pressure to blow into pressure hose to combination valve. Combination valve must open.
If combination valve fails to open or is continuously open:
–  Renew combination valve.
  N26-0394

Ignition system, glow plug system > < Removing and installing parts of lubrication system