Checking vacuum unit in upper part of intake manifold for leaks — VW

🧭 Before you start

Fits: VW Touran I (1T, 2003–2015)

• Renewed: intake manifold upper part, upper part of intake manifold

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• The vacuum unit for intake manifold change-over is integrated in the intake manifold and not visible from the outside.

🔧 Engine codes this applies to

📋 Procedure

1. Pull vacuum hose to actuator for intake manifold change-over (arrow) on intake manifold change-over valve (1). [Note: The vacuum unit for intake manifold change-over is integrated in the intake manifold and not visible from the outside.]
2. Connect hand vacuum pumpVAS 6213 to vacuum testerV.A.G 1368 -connection B-.
3. Connect vacuum hose for vacuum unit to vacuum testerV.A.G 1368 -connection A-.
4. Set vacuum testerV.A.G 1368 to -A/B- position.
5. Operate hand vacuum pumpVAS 6213 several times. Create a vacuum of maximum 500 millibar.

6. Vacuum must not drop.
7. Renew intake manifold upper part .
8. Check mechanics of intake manifold flap change-over for freedom of movement.
9. Remove lower part of intake manifold.
10. Repeat leak test on vacuum unit. Check whether change-over flap moves.
11. Renew upper part of intake manifold.

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