rich idel from Carter BB1

[tcslr]

Carte BB1 carburetor.  Runs fine.  It was pointed out to me that when I am going downhill and am not using the throttle, a fairly strong gasoline odor is smelled.  idle seems fine - maybe a little fast but adjusting much lower I experience trouble with the car stalling.

Plugs are fine.

 

Any suggestions?  Tom

[misterc9]

What kind of car is it?

[Spinneyhill]

Is the carb float level too high? or the needle valve not sealing properly and the excess fuel is draining out somehow?

[carbking]

Questions:

 

(1) Application (what model vehicle)?

(2) Which BB-1 (tag number)?

(3) What fuel valve is in the BB-1?

(4) Gravity feed or pressure system?

(5) If pressure, how much pressure are you using?

(6) Float setting?

 

Jon.

Edited July 6, 2016 by carbking (see edit history)

[tcslr]

it's on my '29 Chrysler.

I need to check the tag

I have no idea which fuel valve - will the tag provide a clue?

an electric fuel pump is installed rather than the original vacuum system.

I will check on the pressure.

How do I check/determine the float setting?

 

Tom

[maok]

Yep, that electric fuel pump is your main issue. Its probably pumping around 4 -6psi, you need less than 2.5 psi.

Stick a fuel pressure regulator between the pump and carby, Bob will be your uncle.

 

I use one of these;

 

http://www.speco.com.au/images/GAM512-00.jpg