Fuel Pressure Relief Procedure - Lotus Evora Service Notes

Lotus Service Notes
LOTUS
OFF
Filler Cap: The fuel filler is located in the right hand rear quarter panel, concealed by a flush fitting hinged
flap. To open the flap, press the release button in the fascia panel outboard of the steering column, with or
without the ignition key in position, and the flap will spring fully open. Unscrew the filler cap. As the cap is
turned, any pressure differential between the tank and the atmosphere will be released and a brief hiss may
be heard. Allow the pressure to equalise gradually to avoid the potential for a small amount of spray. Note
that the cap is tethered to prevent its loss, and should be hooked onto a tab provided for this purpose, on the
hinge of the flap.
To refit, place the cap into the filler neck and turn clockwise until the ratchet mechanism clicks several
times. Push the flap closed.
Filling Procedure: Insert the pump nozzle fully into the neck, and fill until the auto-shut off mechanism is trig
gered. Do not attempt to 'brim' the tank to the top of the filler neck, as expansion of the fuel due to temperature
change (e.g. cold underground fuel storage) may cause flooding of the fuel tank breather system charcoal
canister, or spillage of fuel.
The total usable fuel capacity is 60 litres (13 imp.gal), but for re-fuelling purposes, from the time the low
fuel tell tale is triggered, approximately 50 litres can be accommodated. Note that from the point of low fuel tell
tale activation to the gauge reading empty, is around 5 litres.
Note: The remaining balance of approx. 5 litres, should be treated only as an emergency contingent, the use
of which may entail intermittent fuel starvation dependent on driving conditions, and potential engine damage.
In such a situation, driving style should be modified to minimise engine load and cornering forces.
If maximum engine or handling performance is to be exploited, or severe gradients tackled, a high fuel
level should be maintained to ensure the greatest safety margin of fuel supply.
LN.3 - PRECAUTIONS
The fuel line between pump and injector rail, and the injector rail itself, contain pressurised fuel both when
the ignition is switched on, and for a period after switching off. This feature aids engine starting by reducing
the time needed to build up operating fuel pressure, and by inhibiting the formation of vapour pockets in the
supply line after switching off a hot engine.
WARNING:
i) To minimise the risk of fire and personal injury, relieve the fuel system pressure before servicing
any part of the fuel supply circuit. See 'Fuel Pressure Relief Procedure' below.
ii) To reduce the possibility of sparks occurring when a fuel line is disconnected, or when fuel vapour
is present, the negative battery cable should be disconnected before work is commenced.
iii) When fuel lines are disconnected, absorb any escaping fuel in an absorbent cloth and dispose of
safely.

Fuel Pressure Relief Procedure

This procedure should be used prior to disconnecting any part of the fuel line.
- Remove the fuel pump fuse R19, start the engine, and run until it stops from starvation. Crank the engine
for a further few seconds.
OFF
Fuel filler flap
release button
Filler cap parking
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tab
Section LN
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