2007 Alfa Romeo 156 spark plugs

CORRECT USE OF THE CAR
195
DRIVING ON SNOW AND ICEHere are few suggestions for driving in
these conditions:
– Keep your speed down.
– On a snowy road, fit winter tyres or
snow chains; see the related paragraphs in
this section.
– Use exhaust brake where possible and
avoid abrupt braking.
– Avoid abrupt acceleration and changes
of direction.
– During cold weather even apparently dry
roads may be covered with occasional
patches of ice. Pay great attention therefore
when driving on roads which are in the
shade, or where rocks or trees line the road
and on which ice may persist.
– Keep further back from the vehicle in
front.
DRIVING WITH ABSThe ABS is a part of the braking system
which essentially offers two advantages:
1)It prevents wheel lock-up and conse-
quent skidding in emergency stops, partic-
ularly when the road does not offer much
grip;
2)It makes it possible to brake and steer
at the same time so you can avoid unex-
pected obstacles and direct the car where
you want while braking. The extent to which
this can be done will depend on the physi-
cal limits of the tyre’s sideways grip.
To make the most of the ABS:
– In emergency braking or when grip is
low, a slight pulsing can be felt on the brake
pedal: this means that the ABS has come
into action. Do not release the pedal, but
continue pressing it to give continuity to the
braking action.
– The ABS prevents the wheels from lock-
ing but it does not increase the physical lim-
its of grip between the asphalt and the road.
Therefore, also with a car fitted with ABS,
keep within a safety distance from the ve-
hicle in front and limit speed when ap-
proaching bends.
The ABS serves to increase car controlla-
bilty not to go faster.
REDUCING RUNNING
COSTS AND
ENVIRONMENT
POLLUTIONSome suggestions which may help you to
keep the running costs of your vehicle down
and lower the amount of toxic emissions re-
leased into the atmosphere are given below.GENERAL CONSIDERATIONSVehicle maintenance
The overalll state of the vehicle is an im-
portant factor which has a marked influence
over fuel consumption and driving comfort
and on the life span of your vehicle. For this
reason care should be taken to maintain
your vehicle by carrying out the necessary
checks and regulations in accordance with
specifications given in the “Scheduled Main-
tenance Programme” (see sections... spark
plugs, air cleaner, timing).

CORRECT USE OF THE CAR
198
PROTECTING EMISSION
REDUCING DEVICESCorrect operation of the antipollution de-
vices not only guarantees respect for the en-
vironment but also influences car perfor-
mance. Keeping these devices in good con-
dition is therefore the first rule for both en-
vironment-friendly and economy driving.
The first precaution is to closely follow the
“Scheduled Maintenance Programme ”. For
petrol engines only use unleaded petrol (95
RON) (specification EN228), for diesel en-
gines only use fuel oil for motor vehicles
(specification EN590).
If difficulty with starting is experienced do
not insist with extended attempts. Especially
avoid bump, tow or coast starts: these may
all damage the catalyst. Only use an auxil-
iary battery to start the car in an emergency.If the engine is “not running smoothly”
when the vehicle is travelling, reduce the re-
quest for performance to a minimum and
contact Alfa Romeo Authorized Services as
soon as possible.
When the fuel reserve warning light comes
on fill up as soon as possible. A low fuel level
may cause an irregular supply to the engine
with inevitable increase of the exhaust gas
temperature; this would result in serious
damage to the catalyst.
Never run the engine, even as a test, with
one or more spark plugs disconnected. Do
not warm the engine at idle speed before
moving off, unless the outside temperature
is very low and, in this case too, for no more
than 30 seconds.
Do not install other heat
guards and do not remove
the existing ones on the catalyst
and exhaust pipe.
WARNING
Do not spray anything on
the catalyst, lambda sen-
sor and exhaust pipe.
WARNING
The failure to follow these
rules may cause a fire
hazard.
WARNING
During normal service the
catalyst reaches high tem-
peratures. Do not therefore park
the car over inflammable materials
(grass, dry leaves, pine needles,
etc.): fire hazard.
WARNING

IN AN EMERGENCY
240
Remote controlControls lighting/Stop lightsRear control lighting from sidelightsSeat heating/Sunroof/Seat electrical adjustmentAir bag system
ABS systemAlfa Romeo CODE systemClimate control system
Engine cooling radiator fan:
First speed
– T.SPARK and JTS versions
– diesel versions
– 2.5 V6 24V versions
Second speed
– T.SPARK and JTS versions
– diesel versions– 2.5 V6 24V versionsPassenger compartment fan (petrol versions)Passenger compartment fan (diesel versions)
Electronic ignition and injection system Glow plugs and resistances on fuel oil filter (diesel versions)69
71
71
71
71
68
71
71
69
68
68
68
68
68
68
68
68
71
71
71
68
68 10A
10A
10A
30A
10A (*)
60A
10A (*)
7.5A
15A
50A
60A
40A
30A
40A
40A
40A
40A
7.5A
15A
15A
30A
70A 13
3
6
8
2 (*)
9
11 (*)
13
9
6
6
6
7
7
7
1
4
13
14
15
5
8SERVICES FUSE AMPERES FIGURE

CAR MAINTENANCE
250
20 40 60 80 100 120 140 160 180
Thousand of km
Change fuel filter (diesel versions only)Change air cleaner cartridge (petrol engines)Change air cleaner cartridge (diesel versions only)
Check and if necessary top up fluid levels (brakes, hydraulic clutch, power steering, windscreen wiper, battery, engine coolant, etc..) Check and if necessary top up Selespeed oil level (2.0 JTS version)Replacement of timing drive belt (*) and Poly-V accessory drive beltReplacement of counter-rotating shaft drive belt (only 2.0 JTS)Replacement of spark plugs (T.SPARK 16V, 2.0 JTS and 2.5 V6 24V versions) Check operation of engine control systems (through diagnosis)Check gearbox and differential oil levelCheck automatic gearbox oil level (2.5 V6 24V version)Change engine oil and oil filterChange brake fluid (or every 2 year)Replacement of dust/pollen filter
●●●●●●●●●
●●●●
●●●●●●●●●
●●●●●●●●●
●●●●●●●●●
●
●
●
●●●●
●●
●●●●●●●●●
●●●●●●●●●
●●●
●●●●●●●●●
(*) Or every 3 years in harsh conditions (cold – hot climates, stop and go city traffic, dusty areas or roads covered with sand and/or salt)
Or every 5 years, regardless of the mileage.

TECHNICAL SPECIFICATIONS
302
ENGINECode typeCycleNo./position cylinders
Piston bore and stroke mmTotal displacement
Maximum horsepower
(EEC): kW
HPat rpm
Maximum torque (EEC):
Nm
kgmat rpm
Spark plugs (*)Fuel
1.6 T.SPARKAR32104
Otto
4 in line
82 x 75.65
1598 cm
3
88
120
6200
146
14.9
4200
NGK PFR6B +
NGK PMR7A
NGK BKR6EKPA
+
NGK PMR7A
Unleaded
petrol
95 RON
(specification
EN228)
1.8 T.SPARKAR32205
Otto
4 in line
82 x 82.7
1747 cm
3
103
140
6500
163
16.6
3900
NGK PFR6B +
NGK PMR7A
NGK BKR6EKPA
+
NGK PMR7A
Unleaded
petrol
95 RON
(specification
EN228)
2.0 JTS937A1000
Otto
4 in line
83 x 91
1970 cm
3
121
165
6400
206
21
3250
NGK PFR6B
NGK BKR6EKPAUnleaded
petrol
95 RON
(specification
EN228)
2.0 JTS
Selespeed937A1000
Otto
4 in line
83 x 91
1970 cm
3
121
165
6400
206
21
3250
NGK PFR6B
NGK BKR6EKPAUnleaded
petrol
95 RON
(specification
EN228)
2.5 V6 24V AR32405
Otto
6 in 60° V
88 x 68.3
2492 cm
3
141
192
6300
218
22.2
5000
NGK R PFR6B
Unleaded
petrol
95 RON
(specification
EN228)
2.5 V6 24V
Q-SystemAR32405
Otto
6 in 60° V
88 x 68.3
2492 cm
3
141
192
6300
218
22.2
5000
NGK R PFR6B
Unleaded
petrol
95 RON
(specification
EN228)

TECHNICAL SPECIFICATIONS
305
SPARK PLUGClean, intact spark plugs are determinant
with regard to engine efficiency and for re-
ducing the emission of pollutants.Spark plugs should be re-
placed at the intervals
specified in the Scheduled
Maintenance Programme. Only use
spark plugs of the specified type: if
the thermal capacity is inadequate
or if the envisaged life is not guar-
anteed inconveniences may ensue.BRAKESService brakes:
– front
– rearParking brake
If examined by an expert eye, the ap-
pearance of a spark plug is a sound clue
for locating a fault, even if not involving the
ignition system. Therefore if you are expe-
riencing any engine problems, it is impor-
tant to have the spark plugs checked by Al-
fa Romeo Authorized Services.
STEERING
1.6 T.SPARK 1.8 T.SPARK 2.0 JTS 2.0 JTS 2.5 V6 24V 2.5 V6 24V JTD JTD 20V
Selespeed Q-System JTD 16V Multijet
MultijetSelf-ventilated Self-ventilated Self-ventilated Self-ventilated Self-ventilated Self-ventilated Self-ventilated Self-ventilated
disk disk disk disk disk disk disk disk
Disk Disk Disk Disk Disk Disk Disk Disk
Wheel anti-look system (ABS) with electronic braking distribution.
Servo-brake. Electronic control with brake pad wear sensors. Gasket of ecological type.
Controlled by hand lever operating rear brakes.
Type Turning radius(between pavements)
1.6 T.SPARK 1.8 T.SPARK 2.0 JTS 2.0 JTS 2.5 V6 24V 2.5 V6 24V JTD-JTD 16V JTD 20V
Selespeed Q-System Multijet Multijet
Rack and pinion.
Hydraulic power steering with liquid reservoir in engine compartment
11.1 m 11.1 m 11.1 m 11.1 m 11.6 m 11.6 m 11.1 m 11.1

ALPHABETICAL INDEX
332
Roof bars/ski racks ...................... 292
Roof rack provision ....................... 174
Rubber hoses .............................. 272Safe driving ............................... 192
– before driving off ................... 192
– driving in the fog ................... 194
– driving in the rain ................... 194
– driving on snow and ice .......... 195
– driving with ABS .................... 195
– mountain driving .................... 194
– night driving .......................... 193
– when travelling ...................... 192
Safeguarding the environment ...... 187
Scheduled maintenance
programme .............................. 249
Seat belts ................................... 28
– carrying children safely ........... 35
– front and rear side belt
height adjustment .................. 31
– general instructions ................ 33
– maintenance ......................... 34
– pretensioners......................... 32
– rear central abdominal belt ..... 30
– use ...................................... 28
Seats (front and rear) ............ 21-23
Selespeed gearbox ....................... 141– automatic operation (CITY) ..... 150
– checking the oil level .............. 259
– failure signalling .................... 150
– moving off ............................ 146
– operation with the engine off ... 143
– parking the vehicle ................. 151
– semiautomatic operation
(MANUAL) ............................ 148
– signalling with the buzzer........ 151
– starting the engine ................. 145
– stopping the car ..................... 148
– system activation ................... 142
– towing the vehicle .................. 151
– turning the engine off ............. 145
– warnings .............................. 146
Side lights
– changing front bulbs ............... 226
– changing rear bulbs ............... 228
– switching on.......................... 48
Ski compartment ......................... 24
Snow chains................................ 202
Sound system ...................... 183-293
Sound system presetting
system ............................. 183
Spark plugs (technical data) .......... 305
Speedometer............................... 63
Spray jets – windscreen/rearscreen/
headlight .............................. 274
Starting the engine....................... 189
– emergency starting .......... 191-205
– ignition switch ....................... 17
– procedure for JTD versions ....... 190
– procedure for petrol versions .... 189
– switching off the engine .......... 190
– warming the engine ............... 190
Starting with an auxiliary battery ... 242
Steering system
– specifications ......................... 305
– steering wheel adjustments .... 25
Steering lock .............................. 18
Steering wheel
– adjustment............................ 25
Steering wheel levers ................... 48
Stop lights
– changing bulbs ...................... 228
Sunroof ...................................... 167
– emergency operation ............. 169
– sliding forwards/backwards..... 168
– raising to the quarterlight
position ............................... 168
Sun visors .................................. 166
Symbols .................................... 5-6