Exhaust Emissions System - Thermostatic Air Cleaners: Description

The thermostatic air cleaner, used on all models, is a system which controls the temperature of the incoming air (to the carburetor). By controlling this air temperature, more accurate carburetion can be achieved, giving better combustion and emission control.

On 1976-1977 models, the air cleaner is equipped with an automatic air inlet temperature control device. This device regulates the temperature of the air entering the carburetor. A thermostat is used on the 1300cc engine, while the 1600cc engine equipped models use a thermo sensor and vacuum diaphragm.

On 1978-79 models, the thermostatic air cleaner consists of air cleaner housing with an intake air snorkel, which contains an air flow control door. This door is operated by a thermostatic device with mechanical link or by a bimetal type thermostatic device (626).