Vacuum Reservoir in Intake Manifold, Checking for Leaks

Vacuum Reservoir in Intake Manifold, Checking for Leaks

Special tools, testers and auxiliary items required

• Hand Vacuum Pump (VAS 6213) or (V.A.G 1390)

Conditions

Perform a visual inspection to check whether all vacuum hoses to the intake manifold are not damaged and connected correctly.

Sequence

- Disconnect the vacuum hose - item 14 -=> [ to Intake Manifold Runner Control
(IMRC) Valve ] Intake Manifold Overview from the Intake Manifold Runner Control (IMRC) valve (N316) from intake manifold.

When using the (VAS 6213):

- Set the slide ring - 1 - on the (VAS 6213) to position - A - for "vacuum".





- Connect the (VAS 6213) to the connection on the intake manifold.

- Operate the (VAS 6213) until a vacuum of 0.3 bar has been reached on the pressure gauge.

• Due to the large volume in the vacuum reservoir, up to 30 pumps may be required to generate a vacuum 0.3 bar.

- Observe the pressure for approximately 3 to 5 minutes.

If the vacuum remains at 0.3 bar:

The vacuum reservoir in the intake manifold is OK.

If the vacuum drops.

- Replace the intake manifold.