A4 Sedan L4-2.0L Turbo (BPG) (2005)
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Connect pressure gauge V.A.G 1318 to fuel supply line using adapter V.A.G 1318/11 and V.A.G 1318/12.
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Connect bleed hose - arrow - to the Pressure Gauge V.A.G 1318 and hold it in a measuring container.
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Open shut-off valve of pressure gauge V.A.G 1318 . The shut off valve lever points in the direction of flow.
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Bleed fuel system by pressing remote control briefly.
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Close shut-off valve on Pressure Gauge V.A.G 1318 . The shut off valve lever points in the direction of flow. - arrow - .
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Hold switch of the remote control until no more pressure increase is observed on the Pressure Gauge V.A.G 1318 .
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Specified value: approx. 6 bar (5 to 7 bar) positive pressure.
If specification is not obtained:
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Check delivery rate of fuel pump.
Checking residual pressure
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Check for leaks and residual pressure by observing pressure drop on Pressure Gauge V.A.G 1318.
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After 10 minutes there must be a residual pressure of at least 3.75 bar.
The holding pressure drops below 3.75 bar:
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Check connection between fuel Pressure Gauge V.A.G 1318 and fuel line for leaks.
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Check Pressure Gauge V.A.G 1318 for leaks.
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Check fuel lines and their connections for leaks.
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Replace fuel filter with integrated fuel pressure regulator.
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If the fuel filter is OK, replace fuel pump.
Assembly is in reverse order of removal, note the following:
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Switch off ignition.
NOTE: Before disconnecting pressure gauge, release pressure by opening shut-off valve. Hold collecting container in front of hose.
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Tighten fuel supply line (ensure cleanliness).
Torque specifications
Fuel line to fuel rail
22 Nm