RAM 2500 Truck 2WD V10-8.0L VIN W MDC (1999)
Rollover Valve: Description and Operation
Two rollover valves are used. Fuel vapors from the fuel tank are drawn through these valves into both of the EVAP canisters by engine vacuum. A check
valve is located within each of the rollover valves to prevent fuel flow from the fuel tank in the event of an accidental vehicle rollover.
Rollover Valve Location - With 26 Or 34 Gallon Tank
If equipped with a 26 or 34 gallon fuel tank, two rollover valves are used. One of the valves is permanently mounted to the top of fuel tank. If
replacement of this particular valve is necessary, the fuel tank must be replaced. The other rollover valve is located on the top of the fuel pump module.
This valve may be serviced separately. If replacement is necessary, refer to the Removal/installation.
Rollover Valve Location - With 35 Gallon Tank
If equipped with a 35 gallon fuel tank, two rollover valves are used. Both valves are permanently mounted to the top of fuel tank. If replacement is
necessary, the fuel tank must be replaced.
