TT Quattro Roadster L4-1.8L Turbo (AMU) (2002)
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Remove fuel supply hose -1- (with white marking) from supply line, press release button for this.
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Connect VAG1318 using adapters 1318/7 and 1318/17 (2 pieces) at supply line.
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Open shut-off valve of pressure gauge. The lever points in the direction of flow.
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Start engine and let run at idle.
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Measure fuel pressure.
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Specification: about 2.5 bar positive pressure
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Disconnect vacuum hose at fuel pressure regulator (arrow).
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Fuel pressure must rise to about 3.0 bar positive pressure.
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Switch ignition off.
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Check for proper seal and residual pressure by observing pressure drop on pressure gauge.
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After 10 minutes, there must be at least 1.5 bar positive pressure
If residual pressure sinks below 1.5 bar positive pressure:
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Start engine and let run at idle.