Volkswagen Workshop Service and Repair Manuals > Golf Mk5 > Power unit | 6-cylinder injection engine | Fuel supply, gas operation | Activated charcoal filter system

Checking fuel tank breather

Special tools and workshop equipment required

t	Hand vacuum pump -VAS 6213-

t	Adapter -V.A.G 1318/20–1-

Test prerequisite

l	Ignition must be switched off.

Test sequence:

–	Pull off breather line -2-. To do this, press release button.

Note

The connection -1- is only installed on vehicles with auxiliary heater.

–	Then connect hand vacuum pump -VAS 6213--1- to breather line -2- to activated charcoal filter as shown.

–	Operate hand vacuum pump -VAS 6213- several times. Vacuum must not build up.

If vacuum builds up:

–	Check breather hole on activated charcoal filter → Item for soiling and clean if necessary.

If vacuum does not build up:

–	Seal breather hole -arrow- and operate vacuum pump again several times. Vacuum must build up.

If vacuum does not build up:

–	Renew activated charcoal filter.

Volkswagen Workshop Service and Repair Manuals