volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Intake Manifold Upper Part, Assembly Overview|Page 2936 > < Intake Manifold Upper Part, Assembly Overview|Page 2934
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Intake Manifold: Testing and Inspection

Intake Manifold Change-Over, Checking

This check need only be performed when there is a reduction in available torque, i.e. problems with engine driveability and pulling power on
acceleration, etc.

Special tools, testers and auxiliary items required

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Hand vacuum pump V.A.G1390

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Vacuum tester V.A.G1368

Work sequence

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Check vacuum lines for correct connection and or.

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Check vacuum hoses for porosity.

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Check vacuum system for leaks.

Check vacuum actuator in intake manifold upper part for leaks

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Pull vacuum hose to variable intake manifold actuator - arrow - off variable intake manifold valve -1 -.

Intake Manifold Upper Part, Assembly Overview|Page 2936 > < Intake Manifold Upper Part, Assembly Overview|Page 2934