I have an 81 chevy 4x2, with a quadrajet carb, wiht an electric choke. I understand that there is a bi-metalic spring which heats up and opens the choke slowly as the engine warms. I also understand that if the spring is tighter, than the choke will open slower.
With an electric choke, it gets a steady 12V current. How does that decide when the engine is warm? I've got the choke as tight as it will go, all the way back, but it still opens long before the engine is warm. Does the current to the choke change in any way, because if it doesn't, how would a steady current know when the engine is warm?
I live in Canada, eh, and when it gets cold, I need the choke to stay shut longer. Right now, it opens with 5 minutes, and the engine has barely started to warm up.
TIA.