Touareg V8-4.2L (AXQ) (2006)
‹› Ensure that fuel supply line connection engages audibly when joined.
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Connect remote control (V.A.G 1348/3 A) with adapter (V.A.G 1348/3-3) to connection - arrow - for fuel pump relay for left fuel delivery unit.
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Operate remote control at short intervals, until a pressure of approx. 4 bar has built up.
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Watch pressure drop on gauge. After 10 minutes pressure must not drop below a 3.0 bar decrease.
If pressure drops:
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Left fuel pump is faulty. Replace left fuel delivery unit --> [ Fuel Delivery Unit, Fuel Gauge Sensor and Suction Jet Pump ] See: Fuel
Pump/Service and Repair.
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Open lever of pressure tester and let fuel flow back to fuel tank through hose (V.A.G 1318/13).