audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Fuel Pressure Release|Service and Repair|Page 3463 > < Air Filter Element|Service and Repair|Page 3458
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Fuel Pressure Release: Service and Repair

Before Opening High Pressure Fuel Injection System

CAUTION!
The fuel injection system is divided into a high pressure section (maximum approximately 120 bar) and a low pressure system
(approximately 6 bar).

Before opening high pressure parts, e.g. removing high pressure pump, fuel rail, fuel injectors, fuel pipes, etc., reduce the fuel pressure in
the high pressure area to a residual pressure of approximately 6 bar.

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Connect the VAS 5051B.

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Start engine and run at idle speed.

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Select "engine electronics" in OBD.

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Then select "Measured values".

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Select "Fuel pressure" from the list.

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When the engine is at idle, fuel pressure between 30 and 40 bar is displayed.

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Pry off cover - 1 - on the left of the instrument panel with the trim removal wedge (3409) -  arrow -.

Fuel Pressure Release|Service and Repair|Page 3463 > < Air Filter Element|Service and Repair|Page 3458