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

🧭 Before you start

Fits: VW Golf VI (5K, 2008–2013); platform code 521

• Renewed: intake manifold upper part

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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 changeover (arrow) off intake manifold changeover 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. Remove lower part of intake manifold .
9. Repeat leak check on vacuum unit. Check whether intake manifold flap moves.
10. Check change-over mechanism in intake manifold for freedom of movement.
11. Renew intake manifold upper part.

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