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Well, now the ur-quattro's back I can tackle the problems on 'er indoors' car,
Well, actually, I _have_ to.
Anyway - done the vacuum advance and unblocked (with a blowtorch) the
breathers. Looking around at the rest ...
There's a vacuum switch mounted on the firewall, fed by a 'T' off the vacuum
advance line. Odd behaviour, though - stays open no matter what the input
vacuum (from 0 to 0.8 bar) but closes momentarily when the vacuum is completely
removed. Is this normal behaviour?
2144cc JS engine, 4+E manual.
P.S. Not kidding about the blowtorch.
UK Audi [ur-]quattro Owners Club