Fuel Tank, Draining, Fuel Delivery Unit Not Faulty

Special tools and workshop equipment required

Procedure

-- Observe the safety instructions. Refer to SAFETY PRECAUTIONS .

-- Follow the guidelines for clean working conditions. Refer to GUIDELINES FOR CLEAN WORKING CONDITIONS .

-- Switch off the ignition.

-- Attach a suitable adapter from the : VAS5190/10 onto the suction hose -1- from the : VAS5190A .

Fig 1: Fuel Extracting Device

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-- Open the fuel filler door.

Fig 2: The Fuel Filler Cap

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-- Remove the fuel filler neck cap -arrow-.

WARNING:

Risk of explosion due to electrostatic charge.

Q7:

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WARNING:

Risk of injury due to the fuel being under high pressure.

To reduce the pressure in the fuel system, lay clean cloths around the connection point and carefully loosen the connection point.

-- Free up the fuel hose from the brackets -1 and 3- and disconnect the connector coupling -2-. Refer to CONNECTOR COUPLINGS, DISCONNECTING .

Q8:

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WARNING:

The fuel system is under pressure.

Risk of injury from fuel spraying out.

Wear protective eyewear.
Wear safety gloves.
Reduce the pressure: place clean cloths around the connection point and carefully open the connection point.

-- Free up the fuel hose -1- at the bracket -2- and disconnect the connection coupling -3-. Refer to CONNECTOR COUPLINGS, DISCONNECTING .

Continuation for All Vehicles:

-- Connect the suction hose with the : VAS5190/2 to the supply line in the engine compartment.

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-- Use the : VAS5190A to drain the fuel tank through the supply line.

-- Connect the Vehicle Diagnostic Tester.

-- Switch the ignition on.

-- Select and start OBD mode.

-- Start the basic setting without measured values: the fuel pump starts.

-- When no more fuel is being extracted, press Stop .