June 28th, 2015, 03:13
Reminds me of cars made in the 1970's. In order to cut emissions, car manufactures added a solenoid to the carburetor's throttle plate control arm. With the ignition system off, the throttle plates would be completely closed, theoretically sealing off the intake manifold and any fuel in the manifold would not escape into the atmosphere. When the ignition was on, the solenoid opened the throttle to the set idle position. It worked pretty well... until something went wrong with the solenoid or its wiring. If the solenoid failed, you had to keep your foot on the gas pedal to maintain at least the minimum open throttle.