Can anybody advise the base setting for the vane adjustment on my '93 1.6 Roadster? I know it should be factory set and sealed but I've just spotted it's been messed with, the bung's missing and the screw chewed. I'm hoping it may just account for the fact that it starts instantly, goes well on the road and is good on fuel, MOT every year no problem, though it only gets and passes a basic idle emissions test as it's an import, but to me it always smells and sounds rich when idling or maneouvring in a confined area.
EDIT: vane adjustment? Brain fart. Should have said idle air adjustment screw.