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Mixture preparation system, electronic inj.,Gas > < Assembly overview - parts of active charcoal filter system

Polo Mk4

Checking fuel tank breather
Checking fuel tank breather
Special tools and workshop equipment required
   
t  Hand vacuum pump VAS 6213
Test prerequisite
l  Ignition must be switched off.
Test procedure
  W00-10259
–  First pull breather hose -1- from active charcoal cannister on active charcoal cannister solenoid valve 1 -N80--2-.
–  Connect hand-operated vacuum pump VAS 6213 as shown to hose -1-.
–  Operate hand-operated vacuum pump V.A.G 6213 several times. Vacuum must not build up.
If vacuum builds up:
–  Check breather opening -3- located on bottom of active charcoal filter -4- for soiling, clean if necessary.
If vacuum does not build up:
–  Temporarily seal breather opening -3- and operate vacuum pump again several times. A vacuum must build up.
If vacuum does not build up:
–  Renew active charcoal filter.
  N20-10130

Mixture preparation system, electronic inj.,Gas > < Assembly overview - parts of active charcoal filter system