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Home >> Audi >> 2009 >> Q7 4.2 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 29 (3.0L - Engine Mechanical - General & Technical Data - Engine Code: CATA) >> 00 General, Technical Data >> Safety Precautions >> Working On Fuel System

Working On Fuel System

WARNING: This page is about a different variant/trim than selected.

Note the following when working on the fuel system:

WARNING:

There is a risk of injury because the fuel is under pressure.

  • Place clean rags around the connection before opening the system. Then release pressure by carefully loosening the connection.
  • Wear safety gloves
  • Wear protective eyewear.

Very hot fuel can burn your skin.

  • The temperature of the fuel lines and may reach 100 °C after stopping the engine. Let the fuel cool down before opening any line connections otherwise there is a danger of scalding.
  • Wear safety gloves
  • Wear protective eyewear.

To prevent personal injury and damage to the injection and pre-glow system, observe the following:

CAUTION:

Danger of causing damage to other electronic components when disconnecting the battery.

  • Complete the steps for disconnecting the battery.
  • Always turn off the ignition before disconnecting the battery.

-- Disconnect the battery. Refer to BATTERY, DISCONNECTING AND CONNECTING .