RS 4 Quattro Cabriolet V8-4.2L (BNS) (2008)
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Press the switch of the remote control and slowly close the shutoff valve of the pressure gauge.
The fuel pressure should rise.
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Specification: 4 BAR positive pressure.
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Do not move the shutoff valve position.
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Empty the measuring container.
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Press the remote control switch in for 15 seconds.
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Compare the quantity of fuel delivered with the minimum delivery rate in the diagram (cu.cm/15s).
NOTE: Voltage at fuel pump with engine stopped and pump running is approx. 2 volts less than battery voltage.
If the minimum fuel delivery quantity is not obtained, the following malfunctions may be present:
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Fuel lines pinched. Check fuel lines for damage. Repair or replace as necessary.
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Fuel filter clogged. Replace the fuel filter.
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Fuel pump faulty. Check the fuel pump.
Assembly is performed in reverse order.
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Install fuel line and tighten the line to 28 Nm.
Torque specifications
Fuel line to fuel rail
28