TT Coupe L4-1.8L Turbo (AWP) (2005)
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Connect V.A.G 1318 pressure gauge with adapters 1318/7 and 1318/17 (qty. 2) to supply line.
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Open shut-off tap on pressure gauge. The lever points in direction of flow.
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Start the engine and run at idle speed.
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Measure fuel pressure.
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Specification: approx. 2.5 bar positive pressure
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Disconnect vacuum hose at fuel pressure regulator.
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Fuel pressure must increase to approx. 3.0 bar
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Switch off ignition.
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Check for leaks and for residual pressure by observing the pressure loss on the pressure gauge.
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After 10 minutes there must be a residual pressure of at least 1.5 bar
The residual pressure drops below 1.5 bar:
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Start the engine and run at idle speed.
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Wait until pressure has risen, and then switch off ignition. Simultaneously close shut-off valve of V.A.G 1318 pressure gauge (lever perpendicular