volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Exhaust Gas Recirculation > < Evaporative Emission Control Canister|Locations|Page 3246
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Connect hand vacuum pump US 8026 to vacuum tester VAG 1368 or US 9204 -connection B-.

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Set vacuum tester to -A/B- position.

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Operate hand vacuum pump US 8026 several times.

NOTE:  Vacuum must not build up.

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If vacuum builds up:

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Check gravity valve.

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Check vent pipe -3- (from fuel tank) for blockage. 

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If vacuum does not build up:

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Re-install fuel filler cap.

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Operate hand vacuum pump US 8026 several times.

NOTE:  
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Vacuum must not build up.

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If the fuel level The the tank is low, the vacuum pump must be operated at least 20 to 30 times.

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If vacuum builds up:

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Replace fuel filler cap.

Exhaust Gas Recirculation > < Evaporative Emission Control Canister|Locations|Page 3246