Hyundai Sonata 1991 Shop Manual page 218

EVAPORATIVE EMISSION CONTROL SYSTEM
5. Measure the resistance between the terminals of the sole-
noid valve.
Purge control solenoid valve
Coil resistance 36-44!1 [at 20°C (68°F)]
29Y029
OVERFILL LIMITER (TWO-WAY VALVE)
Y29ECOA
The overfill limiter consists of a pressure valve and a vacuum
valve. The pressure valve is designed to open when the fuel tank
internal pressure has increased over the normal pressure and
the vacuum valve opens when a vacuum has been produced in
the tank.
To fuel
check valve
Pressure
valve
29YOJO
FUEL CHECK VALVE
Y29EDQA
The fuel check valve is used to prevent fuel leaks when the car
suddenly rolls over. This valve is connected in the fuel vapour
line (between canister and overfill limiter) and is installed on the
fuel tank.
The fuel check valve contains two balls as shown in the
illustration. Under normal conditions, the gasoline vapour
passage in the valve is opened, but if roll-over occurs, one of
the balls closes the fuel passage, thus preventing fuel leaks.
To overfill limiter
"
From fuel tank
29YQJl
29-13