audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

With Manufacturer's Scan Tool|Page 5859 > < With Manufacturer's Scan Tool|Page 5857
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Fuel Pressure: Testing and Inspection
With Generic Scan Tool

Fuel Pressure Regulator And Residual Pressure, Checking

Recommended special tools and equipment

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Fuel Inj. Pressure Gauge Set V.A.G 1318 with adapters V.A.G 1318/6 and V.A.G 1318/7

Test requirements:

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Fuel Pump (FP) Relay OK; checking.

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Delivery quantity of Fuel Pump (FP) OK; check.  See: Computers and Control Systems/Testing and Inspection/Component Tests and General
Diagnostics/Fuel Pump (FP), Checking Delivery Quantity

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Fuel filter OK

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Parking brake engaged.

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Vehicles with automatic transmission: Selector lever in P or N.

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Electrical consumers switched off (radiator fan must NOT run during test).

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A/C switched off.

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Ignition switched off.

Procedure

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Remove rear engine cover (arrows).

Checking system pressure

CAUTION:  Fuel system is under pressure. Before opening system, place rags around the connection. Then release pressure by carefully loosening
connection.

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-Open fuel filler flap briefly (pressure release).

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