Emptying the fuel tank (Autogas) — VW

🧭 Before you start

Fits: VW Polo 6R (2009–2014)

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• If the pipe insert at the vaporiser has become loose, the sealing ring must be replaced.
• Take wind direction into account.
• Make sure that the ignition and the vehicle's electrical consumers have been switched off and that the doors are closed.
• The escape of gas can no longer be controlled until the fuel tank is empty.

🔧 Engine codes this applies to

📐 15 workshop diagrams for CMAA

Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.

📋 Procedure

1. ⚠ Autogas is heavier than air!There must be no cavities in the ground (depressions, pits, channels, cellars or other hollow areas into which the gas can flow).There must be no ignition sources present, e.g. exposed flame, sparks, electrostatic discharge or hot surfaces, that could cause the Autogas to ignite. — Empty the gas line
2. ⚠ There is a danger of injury due to escaping gas.The system is pressurised.Wear suitable protection such as eye protection and protective gloves.Before opening the system place a cloth around the connection. Then release pressure by carefully loosening the connection. — Loosen gas line union (arrow) with banjo bolt (1) on gas inlet of filter housing.
3. If the pipe insert at the vaporiser has become loose, the sealing ring must be replaced.
4. Detach connector from gas tank valve N495 and assemble valve.
5. Make a drainage pipe.

6. Set up a safety area .
7. Lay the drainage pipe without any kinks and connect it to the vehicle's gas line. [Note: Take wind direction into account.]
8. Connect gas tank valve N495 to a power supply cable.
9. Make sure that the ignition and the vehicle's electrical consumers have been switched off and that the doors are closed.
10. Connect power supply cable to an additional battery.
11. ⚠ In accordance with the safety requirements and regulations applicable to the use of Autogas systems, never leave the vehicle unsupervised! — Detach connectors from gas tank valve N495(1) and gas gauge sender G707(4) on Autogas tank.
12. ⚠ There is a danger of injury due to escaping gas.The system is pressurised.Wear suitable protection such as eye protection and protective gloves.Before opening the system place a cloth around the connection. Then release pressure by carefully loosening the connection. — Detach gas line leading to vaporiser and gas line from filling point connection (5).
13. Undo and remove bolts (2) and lift fuel tank out of vehicle.
14. Set up a safety area .
15. Carefully undo screws of gas gauge sender G707 alternately and diagonally. [Note: The escape of gas can no longer be controlled until the fuel tank is empty.]

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