W150 1/2 Ton Pickup 4WD V8-318 5.2L VIN R 4-bbl (1982)
Electric Assist Choke: Description and Operation
Fig.21 Electric Assist Choke System
Fig.22 Electric Assist Choke System
Fig.23 Choke Heating Element
Description
The electric assist choke, Figs. 21 and 22, is used to reduce carbon monoxide (CO) and hydrocarbon (HC) emission during engine starting and
warm-up. The choke thermostatic coil spring reacts to engine temperature, however, an electric heating element next to a bimetallic spring in the
choke well will assist engine heat to shorten choke duration, Fig. 23.
The wattage of the choke heater is part of the choke calibration and may change from year to year.