carb and choke issues

[vincep99]

My 63 has a stock carb (I rebuilt it ~ 4 years ago) except for an electric choke that I installed. I have two problems: 1 that I always had and a new one. Maybe someone can help me.
1. If I start it every day it starts fine. If it sits for a couple of weeks, I need ether. Seems like the fuel is evaporating. I think i read somewhere that this is normal for the stock 4-bbl carb?
2. New problem: car seems very rich, fumes inside and behind the car. I checked the electric choke resistance, it is ~ 2 ohms, so it is not an open circuit. I get 12.6 volts to the choke with it unplugged, ~ 9.5 plugged in, which sounds like about the right load. Choke linkage seems free but it must not be oopenign all the way. I guess I should out it on the lift to double-check that there is not an exhaust leak, but does anyone have any ideas on other potential causes?

 

[Garjus61]

I don't know much about carbs, but I do know the fuel evaporates away. I just start mine every weekend and let it run for a bit during winter/bad weather when I don't want to drive it. It starts pretty quickly when I do that. If I let it set, I either have to prime or crank it for a while.

 

[vincep99]

Thanks for the reply. I will just have to start it every week, like you said.

For some reason even when it starts it is running very rich, so if I find a solution I will post whatever I find.

 

[Cdhowell]

Running rich is probably choke related. But the fuel bowl needle and seat are more than likely leaking.

 

[vincep99]

Thanks for the tip about the needle and seat. Makes sense, especially with today's fuels, that it would be time to check/replace them.

 

[vincep99]

I rebuilt the carb this weekend, set the floats, etc and it is running great. Starts well, rich smell is gone. Seems better on acceleration too.

I do hear a louder sucking sound than before from the carb area. Thought it may have been a vacuum leak but I am pulling 17".