SEAT Workshop Service and Repair Manuals > Leon Mk2 > Power unit | 4-Cylinder injection engine (1.4 l engine) | Fuel supply, gas operation | Activated charcoal filter system:

Checking fuel tank breather

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

Special tools and workshop equipment required

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

t	Adapter set -V.A.G 1318/17-

Test requirements

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 -V.A.G 1318/17- to the piping which goes to the activated carbon filter.

–	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 → Item of the activated carbon filter is dirty, and clean if necessary.

If a vacuum does not build up:

–	Temporarily block breather hose → Item and operate vacuum pump several times. A vacuum must build up.

If a vacuum does not build up:

–	Renew active carbon filter.

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