Cold Start/Running Controls

COLD START/RUNNING CONTROLS





A cold start valve sprays additional fuel directly into the intake manifold when a cold engine is being started.

The thermo-time switch controls the cold start valve so that the engine will not flood if it does not start immediately.

The control pressure regulator acts like a "choke", to enrich the fuel mixture while the engine is warming up.

The auxiliary air regulator acts like a "fast idle cam" to slightly increase idle speed while the engine is warming up.