A8L Quattro Sedan V8-4.2L (BVJ) (2007)
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Attach an assisting hose to the (VAG 1318) and hold it in a container.
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Open the shut off lever on the (VAG 1318).
‹› The lever points in the direction of flow.
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Bleed the fuel system by pressing the (VAG 1348/3A) briefly.
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Close the shut off valve on the (VAG 1318).
‹› Lever stands perpendicular to direction of flow - arrow -.
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Hold the switch for the (VAG 1348/3A) until no more pressure increase is observed on the (VAG 1318).
‹› Specified value: approximately 5.5 bar (4.5 to 6.5 bar) positive pressure
If the specification is not obtained:
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Check the fuel delivery quantity of the individual fuel pumps.
Checking Residual Pressure
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Check for leaks and residual pressure by observing the pressure drop on the (VAG 1318).
‹› After 10 minutes there must be a residual pressure of at least 3 bar.
If the residual pressure drops below 3 bar:
‹› Check the connection between the (VAG 1318) and fuel line for leaks.