Fuel System, Bleeding

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2010 Volkswagen Jetta, 2009 Volkswagen Jetta, 2008 Volkswagen Jetta, 2007 Volkswagen Jetta, and 2006 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Adapter for K-jetronic Test Device V.A.G 1318/20
Suction Pump VAS 5226
Vehicle Diagnostic Tester

NOTE:

If the fuel supply system was opened, it must always be bled before starting the engine.

If the fuel supply system is not bled, the catalytic converter will be damaged.

Pay attention to the rules of cleanliness. Refer to CLEAN WORKING CONDITIONS .

WARNING:

The fuel system is under pressure!

Always wear protective eyewear and protective clothing to prevent injuries and fuel from coming in contact with your skin.
Before loosening line connections, place a cloth around the connection point. Then release pressure by carefully pulling off the line.

-- Remove cap -arrow- from the bleed valve.

Fig 1: Installing Cover Cap Of Bleeder Valve

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Turn the valve on the adapter V.A.G 1318/20 counterclockwise until it is completely open.

Fig 2: Identifying V.A.G 1318/20-1 & V.A.G 1318/20

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Install the adapter V.A.G 1318/20-1 onto the adapter V.A.G 1318/20.

-- Install the adapter V.A.G 1318/20 hand tight onto the bleed valve.

-- Connect the hose from the suction pump VAS 5226 as shown.

Fig 3: Connect Hose Of Diesel Extractor VAS 5226

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-- Turn the valve on the adapter V.A.G 1318/20 clockwise into the bleed valve to the stop.

-- Check the adapter and hose connection for leaks.

Connect the vehicle diagnostic tester as follows:

-- Connect the diagnostic cable -2- to the Data Link Connector (DLC) in the driver's footwell.

Fig 4: Connecting Evaporative Emissions Tester To Vehicle

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-- Press the following buttons on the display one after another:

OBD

OBD →

Engine electronics →

Output diagnostic test →

-- Keep pressing the → until the fuel pump relay - J17 activates. This activates the fuel pump. Let the diagnostic run until fuel without bubbles runs out of the bleed valve. Then end the output diagnostic test mode.

NOTE:

If the output diagnostic test mode is interrupted, the engine must be started for a short time before the mode can be accessed again. The output diagnostic test mode is automatically cancelled after 60 seconds.

-- Turn the valve on the adapter V.A.G 1318/20 counterclockwise until it is completely open again.

Fig 5: Identifying V.A.G 1318/20-1 & V.A.G 1318/20

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Clamp the hose from the suction pump VAS 5226 (for example, using hose clamps up to 25 mm dia.3094) and disconnect the hose from the adapter V.A.G 1318/20-1.

-- Remove the adapter V.A.G 1318/20 from the bleed valve.

-- Install the cap -arrow- onto the bleed valve.

Fig 6: Installing Cover Cap Of Bleeder Valve

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.