audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Fuel Pressure Regulator and Holding Pressure (Vehicles Up to 06.03), Checking|Page 3776 > < Fuel Pressure Regulator and Holding Pressure (Vehicles Up to 06.03), Checking|Page 3774
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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).

Fuel Pressure Regulator and Holding Pressure (Vehicles Up to 06.03), Checking|Page 3776 > < Fuel Pressure Regulator and Holding Pressure (Vehicles Up to 06.03), Checking|Page 3774