Civic HX Coupe L4-1668cc 1.7L SOHC (VTEC-E) MFI (2001)
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Evaporative Check Valve: Description and Operation
EVAP Two Way Valve and EVAP Bypass Solenoid Valve
The EVAP two way valve is installed between the fuel tank and the EVAP canister line.
The EVAP Two way valve sends fuel vapor to the EVAP canister corresponding to the pressure inside the fuel tank and prevents excessive vacuum in
the fuel tank by drawing in fresh air through the EVAP canister. The EVAP bypass solenoid valve opens to bypass the two way valve when doing the
EVAP leak check.
