ALFU N CTION
IDENTIFICATION
Check the following items regularly for visual signs of a malfunction
and
also
if any of the driving symptoms listed should persistently occur. If you are
un~ble
to locate and/or correct the malfunction you are advised to contact your authorized
Austin
MG
Dealer immediately.
Emission
Control
Systems-C
alif
ornia
Fuel
To prevent air pollution by vapours from the fuel
tank
and
the carburetter vents,
evaporative
the control equipment stores the vapour in
both
of the charcoal-filled canisters
loss
control
while the engine is stopped
and
disposes of it via the engine crankcase emission
control system when the engine is running.
The fuel
tank
venting is designed to ensure
that
no liquid fuel is carried to the
storage canisters with the vapours and
that
vapours are vented through
the
control system.
The capacity of the fuel
tank
is limited by a specially positioned filler vent
tube
and ensures sufficient volume is available after filling to accommodate fuel which
would otherwise be displaced as a result of a high temperature rise.
Warning: When filling with fuel do
not
attempt to add more
than
the capacity
given in
'GENERAL
DATA'. Slow filling, or allowing the level to
drop
and
then
adding more fuel, is
not
recommended
and
can result in spillage due to expansion.
THE LAYOUT
OF
THE
FUEL
EVAPORATIVE
LOSS
CONTROL
SYSTEM
Visual
checks
1. Condition
and
adjustment of drive belts.
2. Baked or overheated hose between air pump, diverter valve and check valve.
3. All hoses for security, damage
and
deterioration.
4. Fuel leakage.
5. Oil filler
cap
for sealing.
6. Fuel filler cap for sealing.
7. Catalytic converter warning light on.
7
~ j
813
81J
Driving
1. Violent backfire in exhaust system.
symptoms
2. Hesitation to accelerate on re-open ing the throttle after sudden
throttle
closure.
3. Engine surges (erratic operation at varyin g throttle openings).
4. Engine idles erratically or stalls.
5. Noisy air pump.
6. Ignition warning light on above idle speed (slack or brok.en fan belt).
7. Smell of fuel vapours.
8. Engine stops after short runnin ' periods (fuel starvation).
9.
Lack
of power.
10. Excessive fuel consumption.
11. Engine misfires (engine jerks n cruise and acceleration).
12. High temperature indicated (overheating
f coolant).
1. Primary charcoal adsorption canister
2.
Vapour
lines
3. Purge line
4. Connecting pipe
5. Secondary charcoal adsorption canister
6. Restricted connection
7. Restrictor
8. Sealed oil filler cap
9. Oil separator/flame
trap
(arrester)
10. Fuel pipe
12. Running-on control valve
13. Sensing pipe
14. Running-on control hose
15. Air vent pipe
16. Fuel
tank
17. Sealed fuel filler
cap
18. Vapour line
19. Vapour tube
20. Capacity limiting
tank
21. Separation
tank
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