Air Regulator Control

The air regulator provides an air by-pass when engine is cold for purposes of fast idle during warm-up. A bi-metallic heater and rotary shutter valve control the rate of by-passing air. When the bi metallic heater and shutter are cold, air by-pass port is open. As engine starts and an electrical current is permitted to flow through the bi-metallic heater, it warms up and closes the air by-pass port.

Some systems incorporate air regulator and fuel pump on and off controls simultaneously. Fuel pump and air regulator on and off control takes place as follows: ignition switch in "ON" position (operates for 5 seconds), engine running or cranking and engine stopped (stops in one second).