1970 Automatic Type 3

Jan 09, 2006 1 Replies

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john 20 years ago

Hi, At the base of both carbies (immediately above inlet manifold)there is a small bimetallic strip that opens a vent with a temp increase. Any idea on what they do, how to check calibration?. Never seen one on any other carby/vw. Cheers John

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Peter 20 years ago

It's called the 'Idling air valve' or the 'Hot idle valve'. How it works, I don't know but it was exclusive to automatics.

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