New Beetle L4-2.0L (AVH) (2005)
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 -.