SEAT Workshop Service and Repair Manuals

Checking with engine leak detector spray G 001 800 A1

Special tools, testers and auxiliary items

• ◆ Fault reader V.A.G 1551 or vehicle system tester V.A.G 1552 with cable V.A.G 1551/3
• ◆ Engine leak detector spray G 001 800 A1

Test sequence

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 adhered to.

• ‒ Connect fault reader V.A.G 1551 (V.A.G 1552) and with the "Address word" 01 select the engine electronics control unit. When doing this the engine should be idling.
  (Connecting fault reader and selecting engine electronics control unit .)

• ‒ Press keys 0 and 8 for the function "Read measured value block" and confirm entry with Q key.

• ‒ Press keys 0 and 1 for "Display group number 01" and confirm entry with Q key.

• ‒ Note Lambda probe voltage in display zone 3.
• ‒ Systematically spray parts of the intake system with engine leak detector spray.

If the engine speed drops or the Lambda probe voltage changes in display zone 3:

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