Evaporative Emissions System: Description

Honda Evaporative Emission Control System prevents gasoline vapors from escaping into the atmosphere from fuel tank and carburetor. System consists of a pressure/vacuum relief fuel filler cap, a fuel tank with a built in expansion chamber, a liquid/vapor separator, a two-way valve, a charcoal canister, air vent cut-off diaphragm, vacuum holding solenoid valve, purge control diaphragm valve, and purge control unloader solenoid valve. Accord and Prelude have a by-pass solenoid valve at the fuel tank, and Calif. 5-speed Accord and Prelude use a power valve vacuum holding solenoid and check valve. Hoses connect the valves, canister and fuel tank.