fuel type Alfa Romeo 166 2008 Owner handbook (in English)

Under no circumstances
should conventional
leaded petrol be used
as this would irreparably dam-
age the catalyst. if the tank is
accidentally filled with leaded fu-
el, even in minute quantity, DO
NOT START THE ENGINE. Do not
attempt to dilute the petrol with
lead free fuel. Drain the entire
fuel circuit and tank.The car must only be
filled with diesel fuel
for motor vehicles, in
compliance with European Stan-
dard EN590. The use of other
products or mixtures may ir-
reparably damage the engine
with invalidation of the warran-
ty due to the damage caused. In
the event of accidentally filling
with another type of fuel, do not
start the engine and empty the
tank. If the engine has been run
even for only a very short time,
in addition to the tank, it is also
necessary to drain out the whole
fuel circuit.DIESEL ENGINES
124
The anti-pollution de-
vices present on the ve-
hicle impose the use of
four-star unleaded fuel with an
octane number (R.O.N.) above 95.
If the catalyst is not
working properly harm-
ful emissions reach the
exhaust resulting in environment
pollution.
REFUELLING
PETROL ENGINES
In order to prevent the vehicle being
Filled with leaded petrol the diameter of
the filler neck is smaller than the nozzle
used on pumps delivering leaded petrol.

125
If the outside temperature is very low,
the diesel thickens due to the formation
of paraffins and could clog the diesel fuel
filter.
In order to avoid these problems, differ-
ent types of diesel are distributed accord-
ing to the season: summer type, winter
type arctic type (mountains/cold areas).
If refuelling with diesel fuel not suitable
for the current temperature, mix diesel fu-
el with TUTELA DIESEL ARTadditive
in the proportions stated on the can,
putting first the antifreeze in the tank and
then the diesel fuel.
If driving or parking the vehicle for a
long period in cold areas/mountains, re-
fuel with the diesel fuel available at local
filling stations.
In this situation you are also recom-
mended to have in the tank an amount
of fuel 50% higher than usable capacity.FUEL CAP
The fuel cap is released from inside the
car pushing the button (A-fig. 150)
with the engine off.
When refuelling the cap can be hung to
the flap (A-fig. 151) using the hook
provided.
To avoid misplacing it when refuelling,
the cap is connected to the filler neck
with a cord.
A0D0030m
fig. 150
REFUELLING
To guarantee full tank filling, carry out t-
wo refuelling operations after the first
click of the fuel delivery gun. Avoid fur-
ther topping up operations that could
cause damages to the fuel system.

146
A - Normal pressure: tread uniform-
ly worn.
A correct pressure will ensure a longer
life for your tyre and improve perfor-
mance as the tread will then be working
along the entire width of the tread and
wear will be more uniform.
These conditions also lead to:
– better road holding of the vehicle
– easier and more precise steering
– reduced fuel consumption due to a
lower resistance against the rolling of the
tyre.
B - Insufficient pressure: tread
worn more along the edge.
Low tyre pressure will cause irregular
wearing of the tread (greater along the
sides) and cause the tyre to overheat
which could lead to parts of the tyre
breaking off and cause damage to the
shell of the tyre itself.
This type of damage could lead to sud-
den loss of pressure or cause the tyre to
burst.C - Excessive pressure: tread worn
more towards the centre.
Overinflating the tyres leads to:
– irregular wearing of the tread, con-
centrated more towards the centre of the
tread
– a reduction in the level of comfort
– a greater vulnerability of the tyre to
knocks
IMPORTANT When the vehicle is be-
ing used the pressure increases naturally.
In exceptional cases when checking tyre
pressure when hot, do not reduce the
pressure.Wheel balancing
Each wheel together with its tyre is bal-
anced, both satirically and dynamically, in
the factory. When the tyres are replaced
the wheels must be rebalanced to prevent
vehicle instability, wearing of the compo-
nents of the steering system and irregular
tyre wear.
When balancing wheels
made of light alloy only
original Alfa Romeo
counterweights should be used.

207
IMPORTANT - Engine oil
Change the engine oil more frequently
than stated in the Scheduled Mainte-
nance Programme if the car is used pre-
vailingly in one of the following particular-
ly harsh conditions:
– trailer or caravan towing
– dusty roads
– short, repeated journeys (less than 7-
8 km) with an outside temperature of be-
low freezing point.
– engine idling frequently or driving
long distances at low speed (e.g. taxi or
door-to-door deliveries) or in the case of
prolonged inactivity.
IMPORTANT - Air cleaner
Using the car on dusty roads, change
the air cleaner more frequently than stat-
ed in the Scheduled Maintenance Pro-
gramme.
For any doubts about the intervals be-
tween engine oil and air cleaner changes
in relation to how the car is used, contact
Authorised Alfa Romeo Services.IMPORTANT - Fuel oil filter
The variety of the degree of purity of
the fuel oil in commerce may make it
necessary to change the fuel oil filter
more frequently than stated in the Sched-
uled Maintenance Programme. If the en-
gine is “sobbing” it is a sign that the fil-
ter needs changing.
IMPORTANT - Pollen filter
If the car is used frequently in dusty or
heavily polluted environments, you are
recommended to change the activated
carbon filtering element more frequently;
in particular, it should be changed if a
lower flow of air admitted to the passen-
ger compartment is noted.IMPORTANT - Batteries
You are recommended to have the bat-
tery charge conditions checked, prefer-
ably at the onset of winter, to avoid the
possibility of freezing the electrolyte.
This check should be carried out more
frequently if the car is used prevailingly
for short journeys, or if it is fitted with
services that absorb high amounts of cur-
rent permanently with the ignition key
off, especially if installed in the after mar-
ket.
In the case of use of the car in hot cli-
mates or particularly harsh conditions, it
is wise to check the level of the battery
fluid (electrolyte) at more frequent inter-
vals than stated in the Scheduled Mainte-
nance Programme.
IMPORTANT - Remote control
If when pressing the remote control but-
ton of the key, the operating led on the
key flashes briefly only once, the battery
need replacing with other of the same
type.

224
– Insert a new blade passing it through
the curved top of the arm (A) through
the slot.
– Lift the blade to clamp tab (B) of the
coupling spring with the curved top of the
arm.
IMPORTANT The blades may differ
according to the versions. In any case,
follow the instructions provided in the
packs available as spares from Alfa
Romeo Authorized Services.WINDSCREEN WIPER
BLADES
(fig. 17)
Periodically clean the wiper blades and
ensure that they are not damaged. If the
rubber blades are bent of worn in parts
they should be replaced, as follows:
– Press the tab (B) of the blade catch
spring and push the blade towards the
base of the arm (A).
– When the catch spring has been freed
from the curved top of the arm, withdraw
the blade from the arm through the slot. The spark plugs must be
changed at intervals
given in the Pro-
grammed Maintenance Schedule.
Only use spark plugs of the spec-
ified type (see table of “Fuel
Supply and Ignition” in the
“Technical specifications” chap-
ter): if the thermal grade is inad-
equate, or the foreseen life is
not guaranteed inconveniences
may result.
SPARK PLUGS
If the engine is running unevenly have
the spark plugs checked by Alfa Romeo
Authorized Services.
624PGSm
fig. 17

238
FUEL SUPPLY AND IGNITION
3.2 V6 24V JTD 20VMultijet
Supply MPI Bosch Direct injection
Motronic ME7 with variable
electronic geometry
injection turbosupercharger
and ignition and intercooler
with knock electronic
selective control diesel control
Common Rail type
second generation
Spark plugs NGK RPFR6B –
Replace every 100,000 km –
Firing order 1-4-2-5-3-6 –
Injection order – 1-2-4-5-3
(*) There are two different spark plugs, one of each type, per cylinder.
Alterations or repairs to the supply system not carried out correctly or without taking account of the
technical specifications of the system, may cause abnormal functioning with the risk of fire.
WARNING

240
FUEL CONSUMPTION
The fuel consumption values shown in the following tables were established during homologation tests prescribed in specific European
Directives.
The test conditions adopted include the following:
–an urban cycle:this includes cold starting followed by simulation of a mixed urban route;
–an extraurban cycle:this includes frequent accelerating in all gears, simulating normal extraurban use of the vehicle; the speed
varies between 0 and 120 kph;
–combined consumption:this is calculated by considering a route consisting of about 37% urban cycle and 63% extraurban cy-
cle.
IMPORTANT The type of route, traffic conditions, weather conditions, driving style, conditions of the vehi-
cle, trim level/ equipment/ accessories, vehicle load, presence of a roof rack, other items that negatively
affect the aerodynamics of the vehicle or wind resistance may lead to different fuel consumption levels than
those measured by the above-mentioned procedures (see “Economy and environment-friendly driving” para-
graph in the “Getting the best out of your car” chapter).
CONSUMPTION ACCORDING TO EEC STANDARD 1999/100 (litres x 100 km)
3.2 V6 24V JTD 20VMultijet
On urban route 18.3 9.9
On extraurban route 9.1 6.1
On mixed route 12.5 7.5

263
ABS (system) ..............................114
Additional heater ..............................91
Air bags, front and side ....................50
Air cleaner ....................................218
Air conditioner ................................83
Air conditioning ................................80
Alfa Romeo CODE system ..................16
Alfa Romeo I.C.S. system ................14
Ashtray ..........................................99
ASR (system) ................................117
At the filling station ........................124
Automatic fuel cut-off switch
and power supply ......................127
Battery ......................................219
Body maintenance..........................225
Boot ............................................105
Boot light......................................185Brake Assist ............................116-141
Brakes..........................................241
Bulb replacement ....................165-181
Car maintenance......................201
Carrying children safety ....................45
Central locking ................................29
Changing the bulb
- Bulb types ........................165-166
- General instructions ..................165
Child safety ....................................30
Child safety device (doors) ................45
Cigar lighter ....................................98
CO
2emissions ................................241
Coin holder......................................98
Controls ..........................................93
Correct use of the car..............133
Courtesy light ................................101Cruise Control ..................................64
Dashboard ....................................68
Data plates....................................232
Diesel filter....................................219
Dimensions ..................................234
Direction indicators ..........................59
Door lights ....................................102
Doors ............................................28
Dust/pollen filter ......................90-219
Electronic alarm system ..................22
Electronic control units ....................223
Emission control devices ..................129
Engine ..........................................235
Engine codes – Body versions ..........233
Engine coolant temperature gauge ......74
Engine oil consumption ..................236
ALPHABETICAL INDEX