PEUGEOT 404 COPPOLAIR System: Description

Peugeot 404 Coppolair exhaust emission control system consists of:

1. A Solex 34 PBICA carburetor with econostat. Carburetor is equipped with a device on throttle control which will position throttle in two positions, slow idle (750 RPM) or fast idle (1350 RPM).
2. A vacuum diaphragm unit connected to accelerator by an adjustable rod.
3. A three-way electro vacuum control valve, which controls diaphragm unit with, either intake manifold vacuum or normal atmospheric pressure.
4. Relay and governor which controls electro vacuum control valve. Valve operates up to 21 MPH when increasing speed. When decelerating, valve becomes operational at 17 MPH.