volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Fuel Tank Unit > < Fuel Tank Pressure Release Valve|Testing and Inspection
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Fuel Tank Vent: Testing and Inspection

Pressure retention valve, checking 

NOTE:

- The pressure retention valve is open in both directions of flow, from the evaporative emissions (EVAP) canister and from EVAP canister purge

regulator valve -N80- (arrow 1).

- It is only open in one direction of flow from the junction piece for the gravity/overflow valve (arrow -2).

Fuel Tank Unit > < Fuel Tank Pressure Release Valve|Testing and Inspection