Vacuum System, Checking

Vacuum System, Checking

Special tools, testers and auxiliary items required

• Hand Vacuum Pump (VAS 6213)

Procedure

- Check all vacuum lines in the vacuum system for:

• Cracks

• Damage caused by animals

• Crimps

• Leaks and leakage

- Check the vacuum line leading to and from the solenoid valve.

- If there is a fault stored in the DTC memory, check the vacuum lines for the named component, but also all the vacuum lines to the other components.

- If using the (VAS 6213) does not produce any vacuum or if the vacuum drops again right away, then check the hand vacuum pump and the connection hoses for leaks.

Vacuum Adjusting Element

- Check for leaks in the vacuum system after replacing intake manifold lower section with the vacuum adjusting element.

- If there are leaks, remove the intake manifold lower section and find where the leak is.

- Also make sure the intake manifold flaps to the baffles in the cylinder head are working correctly and move easily.