IDLE SYSTEM
With the engine running and the throttle plates in the idle position, only the #1 idle discharge holes are exposed to the engine manifold vacuum (SUCTION). This suction is transmitted to the fuel bowl through the idle passages, idle jets, and compensator jets and draws fuel from the fuel bowl through the compensator jets into the channels that lead to the outside of the idle jets. Tow of these channels connect with the metering wells which supply fuel to the main jets and supply additional fuel for idle operation. As the fuel passes through the idle jets it is measured and then mixed with air admitted through the idle air bleeds. From here it passes down the vacuum channels to be mixed with additional air entering through the #2 idle holes before reaching the #1 idle discharge holes. The amount of fuel-air mixture discharged through the #1 idle discharge holes into the air stream is controlled by a single idle needle valve.
