bmw Workshop Repair Guides

BMW Workshop Service and Repair Manuals

11 Fuel Tank With Mounting > < 6 RA Conducting Leak Test On Fuel Tank And Tank Ventilation System|Page 611
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Conducting leak test on fuel tank and tank
ventilation system

Pressurize fuel tank and tank venting system.

Note:

When leak-testing with a leak tester device, follow the
operation instructions of the device manufacturer.

Important!

Emerging fuel vapors!

These tasks should only be performed in well ventilated
rooms or with a suitable extractor facility provided.

Observe country-specific accident prevention and
occupational safety regulations.

The leak test can be carried out with a leak detector.

Possible causes may be:

Tank cap leaking.

Tank vent line leaking (fuel tank-carbon canister).

Tank vent line leaking (engine compartment).

Sealing ring on fuel filter leaking.

Carbon canister shut-off valve leaking.

RA  Conducting leak test on fuel tank and tank ventilation system

BMW AG - TIS

15.02.2013  12:56

Issue status (12/2007) Valid only until next DVD is issued

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11 Fuel Tank With Mounting > < 6 RA Conducting Leak Test On Fuel Tank And Tank Ventilation System|Page 611