Carter AFB
- Thread starter Eggman63
- Start date
-
Does it have a vacuum signal?
What is the carb number?
What year engine is it off of?
What is the carb number?
What year engine is it off of?
Last edited:
So it is a performance carb not a production carb
My bet is if there is a vacuum operated piston inside the choke housing, it is either supplied vacuum from internal passages or through that port from an external source.
Some testing will tell if it needs to be capped, supplied a vacume source or left alone.
With everything hooked up as is, is there vacuum at the port at idle or at rpm (2000?)
If no vacuum then it does not need to be capped.
Next remove the electronic choke (note it's position)
Look inside the housing, with a vacume pump hooked up to the port, slowly apply a vacuum. Are any parts inside the housing moving? Can you hold a vacuum?
Report your findings
My bet is if there is a vacuum operated piston inside the choke housing, it is either supplied vacuum from internal passages or through that port from an external source.
Some testing will tell if it needs to be capped, supplied a vacume source or left alone.
With everything hooked up as is, is there vacuum at the port at idle or at rpm (2000?)
If no vacuum then it does not need to be capped.
Next remove the electronic choke (note it's position)
Look inside the housing, with a vacume pump hooked up to the port, slowly apply a vacuum. Are any parts inside the housing moving? Can you hold a vacuum?
Report your findings
Choke Pull Off
Once it starts it puls the choke back a little from completely closed so it stays running.
Then the electric choke backs it off as the engine is warming up.
The Edelbrocks have that port incorporated with the electric choke housing.
If you run it without the electric choke you just leave the port plugged.
Once it starts it puls the choke back a little from completely closed so it stays running.
Then the electric choke backs it off as the engine is warming up.
The Edelbrocks have that port incorporated with the electric choke housing.
If you run it without the electric choke you just leave the port plugged.
Last edited:
Choke Pull Off Dashpot on the AFB early carbs.
Idle dies down when capped because your cutting off the extra air and this richens the mixture
Then plug it.
There will be a nipple on the air horn just behind the electric choke. Post a pic of the whole side. Kim
-
