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 Hand vacuum pump V.A.G 1390

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

Test sequence
- Disconnect vacuum hose from Intake Manifold Runner Control (IMRC) Valve N316 from intake manifold.

When using hand vacuum pump VAS 6213:







- Set slide ring - 1 - on hand vacuum pump VAS 6213 to position - A - for "vacuum".
- Connect Hand vacuum pump VAS 6213 to connection of intake manifold.
- Operate hand vacuum pump until a vacuum of 0.3 bar has been attained on pressure gauge.

NOTE: 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 approx. 3 - 5 minutes.

If vacuum remains at 0.3 bar:
Vacuum reservoir in intake manifold is OK.

If vacuum drops.
- Replace intake manifold.