Touareg V6-3.2L (BMX) (2005)
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Then, close pressure gauge shut-off tap - arrow - (lever perpendicular to direction of flow).
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Operate remote control at short intervals, until a pressure of approximately 4 bar has built up.
CAUTION!
Danger of spray when opening the shut-off tap diesel extractor (VAS 5226) must be connected.
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If pressure builds up too high, lower excess pressure by carefully opening the shut-off tap.
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Watch pressure drop on gauge. After 10 minutes the pressure must not drop below a 3.0 bar decrease.
If the pressure drops:
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Check fuel lines and connections to fuel tank for leaks.
If no fault is detected in the wiring:
CAUTION!
Fuel supply lines are under pressure! Before opening fuel system, connect diesel extractor (VAS 5226) and release pressure.
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In addition, wrap a cloth around the connection to catch fuel which runs out.
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Remove pressure gauge (V.A.G 1318) with adapters.
Check Right Pump Check Valve
Test Conditions
‹› Fuel pump relays - 1 - and - 2 - for left and right fuel delivery units must be removed from their sockets.