New Beetle L4-1.8L Turbo (BNU) (2005)
CAUTION: Fuel system is under pressure. Before opening the system place a cloth around the connection. Then release pressure by carefully
loosening the connection.
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Pull off supply line - 3 - and collect leaking fuel with a cloth.
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Connect pressure gauge V.A.G 1318 to fuel supply line and to hose to fuel rail using adapters V.A.G 1318/9 and V.A.G 1318/17.
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Open shut-off tap on pressure gauge. Lever points in direction of flow - arrow -.
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Reinstall fuse 28 (fuel pump) in fuse holder.
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Start engine and run at idling speed.
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Measure fuel pressure.
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Specification: approx. 2.5 bar
If the specification is obtained:
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Pull vacuum hose -1 - off fuel pressure regulator - 2 -.
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Fuel pressure must increase to approx. 3.0 bar
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Switch off ignition.
If the specification is not obtained:
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Check quantity supplied by fuel pump.