Intake Manifold: Testing and Inspection

Checking The Intake-air Distributor For Leaks

Tools







Preliminary work
1. Remove air cleaner housing.

Checking

Checking intake-air distributor for leaks

Tools:







1. Secure rubber sleeve -1- onto throttle housing using the screw-type clamp of the air cleaner housing grommet.







1.1. Insert forcing device -2- and secure by hand using a second screw-type clamp.

2. Join compressed-air hose to air-spring strut filling unit VAS 6231 WE 1282 and connect to forcing device.
2.1. Subject it to a maximum of 0.8 bar of excess pressure to test the intake system using the test gauge -1-.
2.2. Coat accessible sealing points with commercially available leak-locating spray (e.g. TEGA test spray TPS 674) for easily locating any leaks (bubbling).







2.3. Leaks can also be located at less accessible sealing points from clearly audible noises.

Subsequent work
1. Install air cleaner housing.