With Two Piece Intake Manifold

Vacuum Reservoir in Intake Manifold, Checking for Leaks

Special tools, testers and auxiliary items required

• Hand vacuum pump (VAS 6213)

Test Conditions

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

Test Sequence

- Remove the vacuum hose - arrow - from the vacuum reservoir in the intake manifold.





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





- Connect the hand vacuum pump (VAS 6213) to the intake manifold vacuum reservoir.

- Operate hand vacuum pump until a vacuum of 0.3 bar has been attained on the pressure gauge.

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

- Observe pressure for approximately 3 to 5 minutes.

If vacuum remains at 0.3 bar:

Vacuum reservoir in intake manifold is OK.

If vacuum drops.

- Replace intake manifold.