INAT Carbs auto choke

[AndrewBannister]

Hi everyone

I'm recomissioning a 1971 230/8 with twin INAT carbs. The choke plates are supposed to open after a few minutes with the ignition on, but mine don't move. They stay completely shut. I measure 12v at the terminal on the front carb and about 0.2v at the rear, which suggests that the rear carb is activated by a temp sensor on the block. However the front should still move! I checked the actuating arm and it is connected. Any ideas?

Thanks for a great forum, by the way.

Andrew