Jetta GLS L4-1.8L Turbo (AWD) (2001)
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Fuel Tank Vent: Testing and Inspection
Fig. 3 Checking vent valve
Pressure retaining valve is open from EVAP canister and from Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80- in both flow
directions (arrow 1).
From gravity valve side, it is only open in one flow direction (arrow 2).