Touareg 2 V6-3.6L (BHK) (2008)
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Watch pressure drop on gauge. After 10 minutes pressure must not drop below a 4.0 bar decrease.
If pressure drops below 4.0 bar:
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Operate Hand held remote starter (jumper) while doing this, observe display of pressure tester.
Fuel pressure must increase up to a maximum pressure of 6 bar.
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Release control button of Hand held remote starter (jumper) and immediately close shut-off valve of pressure tester. Then lever the points
perpendicular to flow direction - arrow -.
‹› When releasing control button of Hand held remote starter (jumper), fuel pressure decreases to approx. 5.6 bar.
If pressure drops below 4.0 bar again:
(Leak on fuel tank side)
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Check connections to fuel tank for leaks.
If no malfunction can be found:
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Check fuel filter for leaks.
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Check fuel line to sensor flange for leaks.
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Check all additional fuel lines in fuel tank for leaks.
If no malfunctions are found on fuel line:
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Pressure relief valve in fuel delivery unit flange faulty.
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Replace sensor flange which contains the pressure relief valve.
Delivery Rate, Checking
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Remove high pressure in fuel system --> [ Fuel System ] See: Description and Operation/Fuel System.
CAUTION!
Fuel supply line 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 loosening the union nut.
Test sequence
Observe Safety Precautions: --> [ Safety Precautions ] See: Description and Operation/Fuel System
Observe Clean Working Conditions: --> [ Clean Working Conditions ] See: Description and Operation/Fuel System