Volkswagen Passat 1995 Official Factory Repair Manual page 2039

EVAP canister system
http://ebahn.bentleypublishers.com/vw/servlet/Display?action=Goto&type=repair&id=VW.B4.FU08.20.2
Test sequence
- Remove air filter
and assembling air filter.
- Disconnect ventilation hose -1- to Evaporative
Emission (EVAP) Canister Purge Regulator Valve
-N80- (-6-) at upper section of intake manifold -2-.
- For vehicles with crankcase vent valve, seal
connection -7-.
- Connect hand vacuum pump to hose -1-.
- Disconnect ventilation hose -3- (for fuel tank) at
EVAP canister -4- and connect to vacuum tester -
connection A-.
- Connect vacuum tester -connection B- to
connection on EVAP canister.
- Set vacuum tester to position -B-.
- Operate vacuum pump several times.
There must be no vacuum building up.
Page 10 of 22
Page 24-19 , disassembling
20-37
12/6/2004