SEAT Workshop Service and Repair Manuals > Leon Mk1 > Power unit | 4 cylinder Injection engine (1.2 l direct injection engine, turbocharger) | Fuel supply, gas operation | Active carbon filter system (Altea, Altea XL, Leon)

Venting the fuel tank: check

Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter.

Special tools and workshop equipment required

t	Manual vacuum pump -VAS 6213-, see equivalency → Anchor

t	Adapter -VAG 1318/17A-, see equivalent → Anchor

Test condition

l	Ignition must be switched off.

Checking sequence

–	Remove the ventilation pipe -1-. To do so, press the release tabs.

–	Then connect the manual vacuum pump -VAS 6213- using the adaptor set -VAG 1318/17- to the line which goes to the activated carbon system.

–	Operate the manual vacuum pump -VAS 6213- a few times. Vacuum must not build up.

If a vacuum builds up:

–	Check if the ventilation hose of the → Itemactivated carbon filter is dirty and clean it, if necessary.

If a vacuum does not build up:

–	Temporarily seal ventilation → Itemhose and operate vacuum pump again several times. A vacuum must build up.

If a vacuum does not build up:

–	Renew active carbon filter.

SEAT Workshop Service and Repair Manuals