81 FI rough idle when cold

[domdommm]

You need to purchase the correct aux air valve. I purchased mine from Midwest Bayless. They are costly. You can check yours by put the aav in hot water and seeing if the valve opens and closes when you heat the unit and cool it. You need a spacifice valve that fits your spider. Alfa Romeo won’t fit. The phone number to Midwest Bayless is 1800 241-1446 they are very helpful. Good luck