LN7 L4-98 1.6L SOHC VIN 4 2-bbl HP (1983)
Throttle Plate - Carb.: Description and Operation
Fig. 3 Carburetor secondary progression system
When the primary throttle plate is opened approximately 45°, the secondary throttle plate begins to open, Fig. 3. The air/fuel mixture begins flowing
from the secondary transfer holes as they are exposed to manifold vacuum. As the throttle plates are opened further, the secondary main metering system
begins to operate. This system is similar to the primary main metering system.
