Discovery II
EMISSION CONTROL - V8
17-2-18 DESCRIPTION AND OPERATION
Fuel Vapour Separator (NAS version illustrated)
1 Filler neck
2 Filler cap
3 Liquid vapour separator (LVS)
4 To fuel tank
5 Vapour from fuel tank to liquid vapour separator
(LVS)
6 Rubber hose
7 Pipe connection to OBD sensor in fuel pump
(NAS vehicles with vacuum type leak detection
system only)
8 Vent pipe to EVAP canister
9 Anti-trickle valve (NAS only)
The fuel vapour separator is located under the rear wheel arch next to the filler neck and protected by the wheel arch
lining. The connections to the separator unit are quick release devices at the end of the flexible hoses which connect
the fuel tank to the inlet side of the separator and the outlet of the separator to the evaporation vent line.
The fuel separator construction is different between NAS and ROW vehicles; the LVS on NAS vehicles is an L-shaped
metal tube and for all other markets is an integral part of the moulded plastic filler neck.
