New Beetle L4-2.0L (AVH) (2005)
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Pull supply hose -1 - off fuel filter outlet.
NOTE: Press locking ring inward to release fuel lines.
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Connect pressure gauge V.A.G1318 to fuel filter outlet with adapters V.A.G 1318/23 and V.A.G 1318/17.
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Close pressure gauge shut-off tap (lever at right angles to through flow direction - position - B -).
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Operate remote control V.A.G1348/3A for approx. 10 seconds to fill fuel filter and to build up a system pressure of approx. 4 bar.
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Observe pressure drop on gauge.
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After 30 minutes, pressure must not drop below 3.2 bar.
If the pressure drops further:
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Check line connections for leaks.
If no fault in lines is detected:
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Replace fuel pressure regulator.