Question on Turbocharger Wastegate Testing

This is a good article with great pictures. Perhaps it could be improved by explaining how the waste gate valve reopens as there isn't a return spring to hold the valve in the open position. Vacuum closes the valve when commanded by the DME and exhaust pressure opens the valve when vacuum is removed. This is just so when people are testing the movement of the valve, they understand that the valve needs to be manually opened after vacuum is bled off. Just a thought.
Nice work and thanks for the ongoing support to the Mini community.

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This post was auto-generated based upon a question asked on our tech article page here: Mini R56 Testing the Engine Turbocharger Wastegate | R56 Cooper S Hatchback (2007-2013), R56 Cooper JCW Hatchback (2009-2013) | Pelican Parts DIY Maintenance Article

[Nick at Pelican Parts]

There is a spring in the vacuum diaphram. Thanks for the feedback.

- Nick