Colt L4-089 1468cc 1.5L VIN K 2-bbl (1988)
Bowl Vent Valve: Description and Operation
Bowl Vent System
The bowl vent valve is used to isolate the float bowl fuel vapors from the atmosphere. When the engine is operating, intake manifold vacuum acts on the
diaphragm to close the bowl vent valve so that the carburetor bowl is open to the air horn vent. When the engine is stopped, the bowl vent valve closes
the air horn vent and opens a passage to the charcoal canister for storage of fuel vapors.
