D 150 Pickup V6-239 3.9L (1992)
Evaporative Check Valve: Description and Operation
Fuel Tank Pressure Relief/Rollover Valve
LOCATION
The pressure relief/rollover valve is mounted at top of fuel pump module.
PURPOSE
The fuel tanks of all vehicles have a pressure relief/rollover valve. The valves relieve fuel tank pressure and prevent fuel flow through fuel tank
vent hoses during rollover. All vehicles pass a full 360 degree rollover without fuel leakage.
