1938 Cadillac V8 - GM Heritage Center

In conventional carburetors this boiling action creates
gas bubbles which "percolate" upward through the
fuel nozzle and discharge raw gasoline into the intake
manifold which handicaps starting. Cadillac-LaSalle
carburetors have a vent which permits any such gas
bubbles to escape for easy starting.
The nozzle design for the new LaSalle carburetor has
been improved by an accurate calibration of fuel and
air mixture. This improves acceleration during partthrottle
operation and likewise improves fuel economy.
An additional refinement includes an air-cooled metering
jet which improves hot starting.
The LaSalle carburetor also has Climatic Control.
This is a perfected type of thermostatic choke which
improves engine operation when cold by continuing
choking action until the engine has reached its normal
temperature.
The choke is electrically operated on all Cadillac V-8
engines. This mechanism consists of a small, fully
encased wire coil close to the control thermostat. This
begins to heat as soon as the ignition is turned on,
expands the thermostat which in turn regulates the
operation of the choke valve. The electric choke is
REVISED 12-15-37
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