Evaporative Control System; Special Tools Rewired - Lotus TURBO ESPRIT Service Manual

SECTION EMA
Page
3
Evaporative Control System
Fuel vapour from the fuel tanks i s piped into the catch tank, i n which the vapour condenses
into liquid fuel and residual vapour. The level of liquid fuel i n the catch tank
i s
controlled by the catch tank inlet tube. Any increase i n level above this tube and the
fuel i s induced back into the main tanks. The vapour outlet pipe from the catch tank i s
routed via a rol lover valve to connection
'TI
on the vapour .(charcoal) canister.
With the ignition switched off, the carburettors are vented via the plenum chamber and
carb
.
vent valve to connect ion 'C' on the vapour canister. When the ignition
i s
switched
on, the carb vent valve solenoid
is
energised and the pipe i s sealed.
The purge connection on the vapour canister (port 'PI) i s piped to a venturi
IT'
piece fitted
between the air pump and filter. I n this way, when the engine is running air is drawn in
a
through the bottom of the canister, to replace gasoline vapoun corsumed by the air pump
and fed into the exhaust system for oxidation.
.
E N . 2.
-
ENGINE
MANAGEMENT SYSTEM CHECKAET UP PROCEDURE
Special Tools Rewired
1 .
Carburettor Balance Tubes
2. Carburettor Idle Mixture Adjuster
3. Carburettor Float Setting Bar
4. Carburettor Manometer
a
5.
Pressure Test Gauge Kit
6.
Exhaust Sample Probe
7.
Throttle Damper Setting Bar.
8. Special Socket for anti-tamper
Distributor Clsmp
Lotus Part No:
TOOOT0496
TOOOT0497
TOOOT0498
TOOOT0499
TOOOT0500
TOOOT0501
TOOOT0502
TOOOT0503
a
APR 1987