Bowl Vent Valve: Testing and Inspection

Fig. 1 Bowl ventilation system cross sectional view:

This system consists of a carburetor mounted switch vent solenoid (SVS), Fig. 1, and prevents carburetor fuel bowl vapors from being discharged into the atmosphere. When the engine is stopped, the SVS directs fuel bowl vapors into the EEC system vapor storage canister where they remain until the canister is purged. During normal engine operation, the SVS directs fuel bowl vapors into the inner vent tube, Fig. 1, where they are drawn into the intake air stream and burned. The SVS receives operating signals from the ignition switch and the Computer Controlled Emission Control System ECM.




1987 - 88 Testing
For testing procedures on the bowl ventilation system components, refer to the ``Computer Controlled Emission Control System'' section.