Audi Workshop Service and Repair Manuals

Special tools and workshop equipment and additional materials required:

• ◆ VAS 5051 with VAS 5051/1

or

• ◆ V.A.G 1551 and 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 outside 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 observed.
  

Test sequence

• ‒ Connect vehicle diagnostic, testing and information system VAS 5051 (or fault reader V.A.G 1551) and select engine electronics control unit by entering address word "01" ( .)
  When doing this the engine must be idling.

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

• ‒ Enter "001" to select Display Group 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 the engine speed does not change:

• ‒ Press the ⇒key.

If the engine speed drops:

• ‒ Press the ⇒key.
• ‒ Enter "06" to select the function "End output" and confirm entry with Q key.
• ‒ Switch off ignition.
• ‒ Check sprayed areas of intake system for leaks and rectify if necessary.