Audi Workshop Service and Repair Manuals

Special tools, workshop equipment and other items required

• ◆ VAS 5051 with VAS 5051/1

or

• ◆ V.A.G 1551 with V.A.G 1551/3 A
• ◆ Engine leak detector spray G 001 800 A1

Notes:

• ◆ The vacuum in the intake system will cause the leak detector spray to be drawn in with the unmetered air. The leak detector spray reduces the ignitability of the mixture. This leads to a drop in engine speed and to a significant increase of the CO content.
• ◆ The safety precautions listed on the container must be adhered to.

Test sequence

• ‒ Connect vehicle diagnostic, testing and information system VAS 5051 or fault reader V.A.G 1551 and select engine electronics control unit with "Address word" 01
  For this purpose, the engine must be running at idle speed.

• ‒ Enter "08" to select the function "Reading measured value block" and confirm entry with Q key.

• ‒ Enter "001" for "Display group number 001" and confirm entry with Q key.

• ‒ Note engine speed in display zone 1.
• ‒ Systematically spray parts of the intake system with engine leak detector spray.

If engine speed drops:

• ‒ Check sprayed areas of intake system for leaks and rectify if necessary.

• ‒ Press the ⇒key.

• ‒ Enter "06" for "End output" function and confirm entry with Q key.
• ‒ Switch ignition off.