<VV> Why does my car run so rich..

[Sethracer at aol.com]

In a message dated 1/15/2011 12:17:30 P.M. Pacific Standard Time,  
ronh at owt.com writes:

On the  contrary, only by the temperature of the choke coil.  This may or 
may  
not be sensitive to the ambient temperature depending on the functioning  
of 
the engine thermostats.
RonH
 
On our 50 year old cars, there are many things that affect the  correct 
choke closure and proper turn off. When examining the chokes and the  
pull-offs, you have to make sure there is no linkage interference with the  holes in 
the heads. The rods and the tubes can easily be bent. This can  restrict 
both application and pull off. If everything is properly aligned, when  the 
engine is cold, (whatever cold is for you) the chokes should  just close, as 
the throttle is first opened up. If set that way, and  the choke pull-offs are 
in good shape, the chokes should close to start the car,  hold the 
throttles open a bit with a stepped cam (There is an adjustment  for that) and allow 
the car to warm up -whether sitting still or driving -  then the choke 
should be pulled open by the bi-metallic coil, removing the  cam from holding 
the idle up, and allowing the engine to run smoothly. If, after  it has warmed 
up, the engine runs poorly in cold weather, and better in warm  weather, 
there may be other mixture issues with the carbs. Be sure to look for  air 
leaks around the carb bases and PCV system.
 
 
Seth Emerson