Impreza Coupe FWD F4-1820cc 1.8L SOHC (1995)
Rollover Valve: Description and Operation
Rollover Valve
PURPOSE/OPERATION
Prevents fuel from flowing into the canister in the event of vehicle rollover. The valve is constructed of passages and check balls. When the
vehicle valve is tilted, the check balls cover the passages, preventing fuel flow through the valve.