Passat L4-1.8L Turbo (AWM) (2004)
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Open threaded connection (arrow) and absorb exiting fuel using a rag.
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Connect pressure gauge (VAG1318 using adapters VAG1318/6 and 1318/7) to supply line -1- and fuel distributor.
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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.
Specified value: about 3.5 bar positive pressure
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Disconnect vacuum hose from fuel pressure regulator (arrow). Fuel pressure should rise to about 4.0 bar positive pressure.
NOTE: If fuel should escape at the vacuum connection of the pressure regulator, replace fuel pressure regulator
If specified value is not obtained:
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Delivery quantity of Fuel Pump (FP) OK, check, Fuel Pump (FP), checking.