Lotus Elise S1 Service Notes page 355

I Lotus Service Notes
Section JH
a port in the throttle body, such that fresh air is drawn through the canister to purge the charcoal of its adsorbed
fuel, with the resultant gas then consumed by the engine in the normal combustion process.
Charcoal Canister
This is mounted at the left hand front corner of the engine bay via a tapered lug on the canister and
corresponding bracket on the bulkhead.
Fuel vapour from the top of the fuel tank filler neck is routed via a roll-over valve (to prevent fuel spillage
if the car is inverted) mounted on a bracket integral with the filler neck, to the canister port labelled 'tank'. A
central tube in the canister connects this port to the underside of the charcoal bed, below which is a reservoir
to collect any liquid fuel.
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