Volkswagen Workshop Service and Repair Manuals > Golf Mk5 > Power unit | 4-cylinder injection engine (1.4 l 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 set -V.A.G 1318/17-

Test prerequisite

l	Ignition must be switched off.

Test procedure

–	Pull off breather line -1-. To do this, press release button.

–	Then connect hand vacuum pump -VAS 6213- using adapter set -V.A.G 1318/17- to the activated charcoal filter line.

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

If vacuum builds up:

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

If vacuum does not build up:

–	Hold breather connection → Item shut 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