A4 Quattro Cabriolet V6-3.0L (BGN) (2005)
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Wait until pressure has built up, and then switch off ignition. Simultaneously close shut-off valve of V.A.G 1318 Fuel Inj. Pressure Gauge-CIS
(lever perpendicular to direction of flow -arrow-).
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Observe pressure drop on pressure gauge.
If pressure drops again:
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Check pressure gauge for proper seal.
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Check line connections and fuel injectors for proper seal.
If pressure does not drop now:
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Check pressure regulator in fuel filter:
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Vehicles with Front Wheel Drive (FWD)
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Vehicles with All Wheel Drive (AWD)
Checking fuel pressure regulator - vehicles with Front Wheel Drive (FWD):
Sedan:
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Remove luggage compartment lining.
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Push forward the right backrest of rear seat, if necessary.
Station wagon:
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Remove left 1/3 backrest.
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Remove left side trim in luggage compartment and dirt tray.
All:
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Remove cover for connector flange (arrows).