Service Breather Valve

Service Breather Valve
The fuel vapors produced are vented:
^ Through the filler breather valve
^ Through the service breather valve if the filler breather valve is closed
^ To the roll over valve
^ Through the vent line
^ Through the Fitting on the fuel filler neck
^ Into the activated charcoal filter (AKF)
^ Through the evaporative purge line
^ Through the evaporative purge valve (TEV)
^ To the engine intake manifold
The service breather valve only opens if the filler breather valve is closed (fuel tank full to capacity). The service breather valve location is higher in the tank than the filler breather valve and opens at a pressure of 50 mbar. When the fuel tank is not full, vapors are vented through the filler breather valve.
Notes: