Quote:
Originally Posted by phil200tdi
Are you sure its wg rattle?
Pull the vacuum cap next to the Air filter. Blue arrow in below image
Can you hear the vacuum escape? At idle and revving with this unplugged you'll hear the wastegates rattling. Is this the noise you hear?
If you have the same sound with it sealed, then you have a vacuum leak. New turbos don't rattle under correct vacuum.
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Are you sure Phil?
When you unplug the vacuum system the WGs will spring fully open, and thus don't rattle.
AFAIK The rattle is when they just not quite able to fully close or are moving towards or away from fully closed (nearly fully closed), then it 'jangles' against its seat.
When mine rattled, unplugging the vaccum made it totally silent immediately..