R32 4Motion V6-3.2L (CBRA) (2008)
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Compare the quantity of fuel delivered with specification.
*) Minimum delivery rate cu.cm/30 s
**) Voltage at fuel pump with engine off and pump running (approximately 2 Volts less than battery voltage).
Example:
During the test, a voltage of 12.5 volts is measured at the battery. Since the voltage at the pump is approximately 2 Volts less than battery voltage, there
is a minimum delivery rate of approximately 580 cu.cm/30 s.
If The Minimum Delivery Rate is Not Attained
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Check supply line to filter for possible restrictions (kinks) or clogging.
If fuel line is O.K.
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Check fuel delivery rate in front of fuel filter.
CAUTION: Fuel system is under pressure. Wear protective goggles and protective clothing to prevent injuries and contact with skin.
Before removing from hose connection wrap a cloth around the connection. Then release pressure by carefully pulling hose off
connection.
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Disconnect supply line - 1 - from fuel filter input.
NOTE: Press in securing ring to disengage the fuel line.
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Connect pressure gauge V.A.G 1318 with adapter V.A.G 1318/17A as shown.
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Connect adapter V.A.G 1318/1 to adapter V.A.G 1318/11 of 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. Lever will point in direction of flow - A -.
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Operate remote control V.A.G 1348/3A. Slowly close shut-off tap, until pressure gauge shows 4 bar. From this point on do not move position of
shut-off tap.
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Empty the measuring container.
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Operate remote control anew for 30 seconds. Compare delivery quantity with the value determined from the first measurement.
If the minimum delivery rate is now obtained:
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Replace fuel filter.
If minimum delivery rate is again not obtained:
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Remove fuel delivery unit and check filter strainer for dirt.
Only when up to now no malfunction has been detected:
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Replace fuel delivery unit.
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Reconnect all disconnected fuel lines.