Re: Testing the idle mixture

["65" <65Val@xxxxxxxxx>]

Gary...yes, I do it that way, except, I just use my hands cupped over the 
airhorn to restrict the airflow. If the idle speed decreases with the air 
blocked, it doesn't necessarily mean its too rich....could be just right, as 
blocking the right mix will cause richness and corresponding decrease in 
RPM.

Just my experiences....


Darwin/BC/Canada
--'67 Dart GT 'vert...273/904
--'65 Cdn.Valiant Custom 100 'vert...225/A833----SOLD
http://s41.photobucket.com/albums/e285/65val


----- Original Message ----- 
From: "Gary H." <62to65mopar@xxxxxxxxxxx>
To: <1962to1965mopars@xxxxxxxxxxxxxxxx>
Sent: Thursday, August 25, 2011 7:11 PM
Subject: Testing the idle mixture


Anyone have experience doing it this-a-way?

Testing the idle mixture on a carburetor-equipped engine: take off the air 
cleaner; proceed with a completely warmed up engine, choke open all the way, 
and engine idle speed set to factory specifications. Take a flat object and 
slide it slowly over the air horn of the carburetor in order to cut off the 
air flow. The fuel mixture is okay if there is no or little change in of 
engine speed when the air horn is nearly totally blocked off. If, while 
slowly sliding the flat object over the air horn of the carburetor the 
engine speed goes down, then the idle mixture is too rich; if the engine 
speed goes up while slowly sliding the flat object over the air horn of the 
carburetor, the idle mixture is too lean.

Thanks,
Gary H.

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