Eagle Sedan L6-258 4.2L (1984)
Bowl Vent Valve: Description and Operation
Fig. 19 Bowl vapor vent
This vent, Fig. 19, used on some carburetors provides an outlet from fuel vapors when the engine is not running. If this vent were not provided, raw
fuel vapors would enter the atmosphere. Some vapors would also enter the intake manifold making hot restarts difficult. When the engine is running, the
fuel bowl must be vented to the inside of the air cleaner for proper fuel flow. This is accomplished by automatically closing the bowl vent. Some
carburetors use manifold vacuum to accomplish this while others use a mechanical link to the throttle.