With Manufacturer's Scan Tool

Intake Air System, Checking For Leaks (Unmetered Air)

Special tools and workshop equipment and additional materials required:







- VAS 5051 with VAS 5051/1
- Engine leak detector spray G 001 800 A1

NOTE:
- 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.

Test sequence
- Connect the vehicle diagnostic, testing and information system VAS 5051, Vehicle Diagnostic, Testing and Information System VAS 5051, Connecting and Selecting Functions , and select the vehicle system "01 - Engine electronics" from the menu. When doing this the engine should be idling.







Display on VAS 5051:
- Select the diagnosis function "08 - Read data block" from the menu -1-.







Display on VAS 5051:
1 - Enter display group
(figures up to 255)
- Using the keypad -2-, enter "001" to select Display group 001 and confirm entry with Q key.







Display on VAS 5051:
- Note engine speed in display zone -1-.
- Systematically spray parts of the intake system with engine leak detector spray.

If the engine speed drops:
- Check sprayed areas of intake system for leaks and correct if necessary.
- Press the <-�button to exit from diagnosis function "08 - Read data block".







Display on VAS 5051:
- Select the diagnosis function "06 - End output" from the menu -1-.
- Switch off ignition.