fuel filter FIAT TEMPRA 1988 Service And Repair Manual

• Repeat this operation three more times until the
complete code number has been entered, if the code
has been entered in correctly LED B will start flashing.
• Release button A (see illustration
1B).
Red LED B
flashes for 8 seconds indicating the new remote unit's
code has been stored.
IMPORTANT NOTE: If the LED does not illuminate
when remote unit button (illustration 1B, button
O is pressed, change the remote unit's battery.
• Insert the emergency key A into the emergency switch
slot in the glove compartment turn the key to the left to
switch the alarm off (see inset).
• Turn the key back towards its original position to
switch the alarm system back on.
IMPORTANT NOTE: As the alarm system absorbs
energy, if you are not planning on using the car
for a long period of time, turn the alarm exclusion
key to the off position, so as not to run the vehicle
battery down.
• 2. IGNITION SWITCH AND
STEERING COLUMN LOCK
IGNITION SWITCH
2. The ignition/steering column lock key, once inserted
in the ignition lock, can be placed in any of the
following four positions:
• PARK
-
With the key in this
position the side and tail lights
can be turned on, the steering
column locked and the keys
can be removed. Press button
A to turn the key to PARK.
• STOP
-
When the key is
turned to the STOP position the steering column will be
locked, and the keys can be removed.
• MAR
-
This is the driving position. When the key is in
this position all the electrical devices are energised.
• AW
-
Turning the key to this position starts the
engine.
STEERING COLUMN LOCK
• LOCKING
-
To apply the steering wheel lock turn the
steering wheel slightly to the left or right when the key is
at STOP or PARK.
• UNLOCKING
-
Rocking the steering wheel gently back
and forth while turning the ignition key to MAR unlocks
the steering wheel.
• 3. PANEL INDICATORS
INSTRUMENT DISPLAY PANEL
3. These are the instrument panel warning LED indicators
for all FIAT Tipo/Tempra models. Your vehicle will only
have Panel Indicators relevant to your particular car.
• 4. ELECTRONIC CHECK PANEL
4. The electronic check panel is not fitted to models
with basic trim.
IMPORTANT NOTE: The check panel will not
indicate if the tail light fuses blow at the same
time, or if there is a circuit failure within the panel
display.
SIDE AND HATCHBACK DOORS
When the ignition key is at MAR, the check panel LEDs
g, h, i, I, m and n monitor the light bulbs and fuses.
LEDs a, b, c, d, and e monitor incomplete closure of
the side doors and hatchback.
• Never remove the key when the car is moving.
If you do, the steering wheel will lock the first
time you turn it.
• If the ignition lock has been tampered with or
shows any sign of damage (e.g. attempted theft),
have the lock checked at your nearest FIAT
Service Centre.
M Choke Oil pressure warning
Direction indicators (®) Handbrake engaged
-X: Side lights m Rear window defroster
10 High beam head
lights '•y Injection system warning light
<1* Rear fog lights • Battery warning
A Hazard warning lights A Seat belts not
buckled
m ABS brake warning a Automatic transmission fluid warning
o Brake pad wear warning a Doors not properly closed
Turbo pressure warning Trailer direction indicators
10 Front fog lights a Diesel fuel filter condenstate warning
•515" Diesel heater/glow •515" plugs 3
SWITCHING OFF THE ALARM
1C. Some models
are fitted with an
alarm exclusion
switch, which can
be found inside
the glove
compartment. If
the alarm is faulty
or the remote control batteries are flat:

PART F: TORQUE WRENCH SETTINGS
Key for engine types and sizes: A
-
1372cc; B
-
1581cc;
C
-
1697cc Diesel; D
-
1929cc Diesel; E
-
1929cc Turbo Diesel.
Engine
Screw retaining caps to crankcase (M10 x 1.25)
Screw retaining intermediate and central caps to crankcase (M12 x 1.25)...
Self-locking screw retaining front and rear caps to crankcase (M12 x 1.25)
Bolt, cylinder head to engine block (M10 x 1.25)
IMPORTANT NOTE: All torque settings shown in
Newton-meters (Nm). Bolt, nut or screw sizes in
brackets in left-hand column.
Bolt, cylinder head to engine block (M12 x 1.25)
Bolts, top to bottom cylinder head (M8)
Nut for connecting rod cap retaining bolt (M9 x 1)
Screw, connecting rod cap (M10 x 1)
Screw retaining engine vent to crankcase
(M8)
(M8)
Screw retaining front cover to crankcase
(MlOx 1.25)
(M8)
Bolt retaining rear cover (flywheel side) to crankcase (M6)
Nut retaining inlet and exhaust ducts to cylinder head
(M8)
(M8)
Screw, flywheel to crankshaft
(M10x 1.25)
(M12
x
1.25)
Lower belt cover retaining screw (M8)
Screw, damping flywheel to drive gear (M8)
Nut retaining auxiliary drive pulley to crankshaft (M20 x 1.25)
Screw retaining drive shaft to crankshaft (*) (M14 x 1.5 left)
Screw, timing gears
(M10x 1.25)
(M12x 1.25)
Belt tensioner retaining bolt
(M8)
(M10x 1.25)
Fixed belt tensioner retaining screw (M10 x 1.25)
Screw retaining auxiliary component driven gear (oil pump) (M10 x 1.25)
Nut for camshaft cap retaining stud (M8)
Nut retaining camshaft and air vacuum pump end mounts (M8)
Combustion prechamber retaining ring (M32 x 1.5)
Nut, injection pump stud (M8)
Screw, injection pump (M8)
Nut fastening flexible block to coolant pump case (M12 x 1.25)
Nut, injection pump gear (M12 x 1.75)
Screw retaining reaction bracket to oil filter support and injection pump (M8).
Top retaining screw or nut, oil filter support and injection pump (M12 x 1.25)
Lower retaining screw, oil filter support and injection pump (M10 x 1.25)
Complete injector (M24 x 2)
Glow plugs (M12 x 1.25)
Nuts retaining fuel delivery line to injection pump and injector (M12 x 1.25)...
Bolt, coolant pump to engine block (M8 x 1)
Bolt retaining cover and bracket to coolant pump case (M8)
Oil pressure switch (M14 x 1.5)
Coolant temperature sender unit
(M16 x 1.5 tapered)
(M18x 1.5 tapered)
Coolant temperature thermal switch (M16 x 1.5 tapered)
(*) The bolt need not be greased.
A B C D E Torque (Nm)
• • 80
• • • 113
• • • 113
• • 40
+
90 degrees
+ 90 deqrees
• • • 100
+
90 degrees
+ 90 deqrees
• • 28
• • 51
• • • 25 + 50 deqrees
• •
• • •
25
20
• • 50
25
• 10
• •
• • •
28
25
• •
• • •
83
142
• • 25
• • • 28
• • 155
• • • 190
• •
• • •
83
118
• •
• • •
25
44
• • • 44
• • 83
• • • 19
• • • 19
• • • 118
• • • 25
• • • 25
• • 80
• • • 49
• • • 29
• • • 98
• • • 71
• • • 55
• • • 15
• • • 29
• • • 25
• • • 23
32
• •
• • • 34
30
• • 30
expert22 fl/i* http://rutracker.org 23

Thermal valve on inlet manifold
(M10 x 1.25 tapered)
(M8 x 1.25 tapered)
Oil pressure sending unit (M14 x 1.5)
Oil temperature sender unit (M14 x 1.5 tapered)....
Oil level sending unit (M12 x 1.25)
Engine oil sump retaining bolt/nut (M6)
Screw retaining oil sealing cover to crankcase (M6)
Nut retaining manifold support bracket (M8)
Nut retaining turbine to exhaust manifold (M8)
Air pressure switch on inlet manifold (M12 x 1.5)...
Power Unit Mounting
ENGINE SIDE
Screw (with long flange) retaining flexible block to rail (M8)
Self-locking nut with plastic ring (for through screw) retaining flexible block
to engine bracket (M10 x 1.25)
Screw retaining flexible block supporting bracket to crankcase
(M10. 1.25)
(M12 x 1.25)
Bolt retaining flexible block to engine bracket (M12 x 1.25)
Bolt retaining power unit suspension link (M10 x 1.25)
GEARBOX SIDE
Screw (with wide flange) retaining flexible block to rail (M8)
Flanged screws retaining support to plate on gearbox (M10 x 1.25)
Self-locking nut with plastic ring (for through screw) retaining flexible block
to gearbox side bracket (M10 x 1.25)
Flanged screw retaining flexible block to gearbox side bracket (M12 x 1.25).
DIFFERENTIAL SIDE
Screw with flange unit retaining elastic block to beam (M8)
Self-locking nut retaining bracket to gearbox support
(M8)
(M12 x 1.25)
Screw retaining bracket brace to support on gear case (M10 x 1.25)
Screw, rubber block to bracket (M12 x 1.25)
Exhaust
Nut retaining flange to exhaust manifold (M8)
Nuts for bolts fastening collars joining exhaust pipe sections (M10 x 1.25)...
Bolt retaining exhaust pipe sleeve to turbine (M8)
Bolt retaining front exhaust pipe section to gearbox (M8)
Metex joint to nut and stud manifold to plate and spring retainer (M8)
Nut for bolt anchoring first exhaust pipe section (M8)
Nut retaining bracket anchoring first exhaust pipe section (M12 x 1.25)
Screw with normal flange retaining exhaust pipe terminal block
support bracket (M8)
Fuel Circuit
Bolt (with wide flange) retaining tank and fitting to body (M8)
Ring retaining delivery, recirculation and vent fitting mounts to tank
(131 x 6-Trapezoid thread)
Screw (with wide flange) retaining fuel filter support bracket (M8)

Thanks
are due to the excellent, knowledgeable and helpful staff at FIAT main dealers, Ryauto of Amblecote, in the West
Midlands for supplying vehicles and for their assistance with this chapter. In particular, thanks are due to the efficient Maurice
Hough, Service Manager, the experienced Foreman, Tony Morris, and young demon mechanic, Matthew Worsfold.
Some of the suggested inspection/replacement intervals may not correspond to those shown in the original handbook. The suggested
schedule, based on FIAT'S recommendations, takes into account the age of the vehicle and the annual MoT test in the UK.
In practice, because of the split between (mainly) 12 month/9,000 mile and 18 month/13,500 mile intervals, you will need to
service your Tipo or Tempra at most, if not every, 6 month interval.
IMPORTANT NOTE: Each service should be carried out at EITHER the recommended mileage OR the recommended time
interval, whichever comes first.
SERVICE INTERVAL CHART
SERVICE INTERVALS: KEY
A
-
Every week, or before every long journey. F
-
Every 3 years or 27,000 miles.
B
-
Every 6 months, or 4,500 miles. G
-
Every 4 years or 36,000 miles.
C - Every 12 months, or 9,000 miles. H
-
Every 6 years or 54,000 miles.
I
-
Every 63,000 miles. D - Every 18 months , or 13,500 miles.
H
-
Every 6 years or 54,000 miles.
I
-
Every 63,000 miles.
E
-
Every 2 years or 18,000 miles J
-
Every 72,000 miles.
PART A: REGULAR CHECKS
SERVICE INTERVALS
Job 1. Engine oil
-
check level A
Job 2. Cooling system
-
check level A
Job 3. Brake/clutch fluid
-
check level A
Job 4. Battery
-
check electrolyte level A
Job 5. Screen washer fluid
-
check level A
Job 6. Tyres
-
check pressures and
condition (road wheels) A
Job 7. Check lights/change bulbs A
PART B: THE ENGINE AND
COOLING SYSTEM
Job 8
-
Petrol. Change engine oil and filter C
Job 8
-
Diesel. Change engine oil and filter B
Job 9. Check crankcase ventilation H
Job 10. Check/adjust valve clearances D
Job 11. Check camshaft timing belt F
Job 12. Change camshaft timing belt I
Job 13. Check cooling system C
Job 14. Change engine coolant E
PART C: TRANSMISSION
Job 15. Check manual gearbox oil level C
Job 16. Change manual gearbox oil J
Job 17. Check auto, transmission fluid level C
Job 18. Change auto, transmission
fluid and filter F
Job 19. Check driveshaft gaiters C
Job 20. Check/adjust clutch C
Job 21. Check auto, transmission selector
cable E
PART D: IGNITION AND ELECTRICS
SERVICE INTERVALS
Job 22. Check/clean/gap spark plugs B
Job 23. Change spark plugs D
Job 24. Check/clean HT leads and
distributor cap C
Job 25. Check ignition timing C
Job 26. Check/adjust drive belt/s D
Job 27. Check electric fan operation C
Job 28. Run diagnostic ignition/injection test D
PART E: FUEL AND EXHAUST
Job 29. Check fuel pipes for leaks C
Job 30. Change petrol air filter D
Job 31. Change diesel air filter C
Job 32. Change petrol fuel filter F
Job 33. Drain diesel fuel filter B
Job 34. Change diesel fuel filter C
Job 35. Check/adjust petrol engine idle
and emissions C
Job 36. Check emission/evaporative/EGR systems F
Job 37. Check Lambda sensor F
Job 38. Check/adjust diesel idle speed C
Job 39. Check/adjust diesel injection timing E
Job 40. Check inlet and exhaust manifold fixings D
Job 41. Check exhaust system C
PART F: STEERING AND
SUSPENSION
Job 42. Check front wheel bearings C
Job 43. Check front suspension C
Job 44. Check steering column, joints and rack C
Job 45. Check power steering fluid C
Job 46. Check rear wheel bearings C
Job 47. Check rear suspension C
Job 48. Check wheel bolts for tightness C

PART G: BRAKING SYSTEM
Job 49. Check front brakes
Job 50. Check rear brakes
Job 51. Check/adjust handbrake
Job 52. Check brake pipes
Job 53. Change brake hydraulic fluid
SERVICE INTERVALS
C
C
C
C
E
Job 56. Check seat and seat belt mountings C
Job 57. Check headlight alignment C
Job 58. Check underbody C
Job 59. Check spare tyre B
Job 60. Change pollen filter C
Job 61. Replace airbag gas generator 10 years
PART I: ROAD TEST
PART H: BODYWORK & INTERIOR
Job 54. Lubricate hinges and locks
Job 55. Check windscreen
Job 62. Road test and specialist check. AFTER EVERY
SERVICE

ENGINE BAY LAYOUTS
These are the engine bay layouts common to almost all Tipo/Tempras. Note that there is no carburettor fitted to fuel-injected
vehicles.
1 - PETROL ENGINES 2 - DIESEL ENGINES
1
-
oil filler cap 7
-
distributor (ignition) 12 - oil filter location
2
-
engine oil dipstick 8
-
coil (ignition) 13
-
fuel pump (mechanical)
3
-
coolant filler cap 9
-
electronic control unit (ECU), 14
-
diesel injection pump
4 - brake fluid reservoir Digiplex 2 15
-
alternator location (behind engine)
5 - battery 10
-
air filter housing
6
-
screenwash reservoir cap 11
-
fuel filter
PART A: REGULAR CHECKS
1B. ...and the diesel's
dipstick is in a similar
spot, located at the
front edge of the
timing cover, behind
the right-hand
headlight.
Q INSIDE INFORMATION: The
difference between MIN and MAX
marks is approximately one litre of
oil. Q
We recommend that these Jobs are carried out on a weekly
basis, as well as before every long journey. They consist of
checks essential for your safety and for your car's reliability.
• Job 1. Engine oil
-
check level.
Check the engine oil level with the car on level ground. If the
engine has been running, leave it turned off for several
minutes to let the oil drain into the sump.
1A. All petrol engines
have the dipstick at
the front of the block,
towards the timing
belt end...
1C. Lift the dipstick out,
wipe it dry and re-insert it. The oil
level is correct when between the
MAX and MIN marks.

LUGGAGE COMPARTMENT LIGHT
7b. TIPO: Pull the lens
downwards to remove
it. Remove and replace
the 5W tubular bulb.
7c. TEMPRA SALOON:
From inside the boot,
lever the light unit out
of its slot with a screw-
driver. Remove and
replace the 5W tubular
bulb (A).
DASH BULBS
See Chapter 6, Repairs and Replacements for details of
instrument panel removal for access to its light bulbs. The
bulbs are a quarter-turn fit in the back of the panel.
FACT FILE: FUSES
• 7d. The fuse box is
found to the side of
the steering column.
Pull the lever
marked FUSE...
• ...and lower the fuse box.
• 7e. A symbol above each fuse tells you which circuit it
protects. Four spare fuses are located near the top of the
fuse box.
10A Instrument power supply, windscreen
washer pump, rear screen washer pump,
reverse lights, steering column switch lights,
FIAT CODE system.
10A Instrument power supply, left tail light,
right number plate light, right side light, left
trailer tail light.
10A Illumination of controls, right tail light,
left number plate light, right tail light.
20A Horns, cigarette lighter, stop lights.
20A Power locks.
7.5A Interior lighting.
20A Rear window heater and indicator light,
door mirror defogging elements (if fitted).
10A Hazard warning lights.
25A Electrical fan for radiator cooling (only
for petrol versions without air conditioner).
7.5A Direction indicators, right door power
mirror (if fitted).
7.5A Rear fog-guard lights and panel
indicator.
20A Front fog lights and panel indicator
(if fitted).
10A Right low beam headlight.
10A Left low beam headlight.
SERVIZI SERVICES
iOO:
-00 r
Q
M
mp
o$
ID
ID
7e
10A Left high beam headlight and panel
indicator.
10A Right high beam headlight.
20A Windscreen wiper.
20A Read window wiper, power sunroof and
heated seat (if fitted).
20A Heater/ventilation fan.
Fuses located on the auxiliary panel
The fuses protecting special devices (options, features of
special versions or devices with high power require-
ments) are on an auxiliary panel to the side of the fuse
box under the dashboard. It is much easier to remove
and replace auxiliary panel fuses if you first remove the
oddment tray and moulding fastened by 5 screws. The
panel also houses a number of relays:
20A Intake manifold heater (petrol engines).
20A Diesel fuel filter heater (diesel and turbo diesel
engines).
20A Headlight washer pump.
25A Front power windows.
25A Rear power windows.
10A Antilock braking system.
7.5A Low beam headlight dimming system (for countries
where headlights always need to be on.)
30A Radiator fan (diesel versions).
40A Radiator fan (turbo diesel versions with heater).
60A Radiator fan (turbo diesel versions with air condi-
tioning).
The arrangement of the fuses on the auxiliary panel
varies with the number and type of devices present.
The amperage is clearly marked on each fuse. ALWAYS
replace a blown fuse with one of the correct amperage.
NEVER 'fix' a fault by using a fuse of a higher amperage,
nor 'bridge' a blown fuse
-
it could cause a fire!
7f. When a fuse is 'blown'
its conductor wire (A) has
a gap in it.
If a fuse blows, find out
why and put it right
before fitting a new fuse.
(7)
o m f (7) (7)
0 tJ 7f

28C. With very latest
'distributorless' system,
disconnect the multi-plug
from the base of the 'black
box'.
28D. With the two earlier
systems, disconnect the
multi-plug leading to the
distributor/control unit
from the ignition coil
behind the battery.
FACT FILE: CRANKING AN ENGINE
WITH ELECTRONIC IGNITION
Severe damage can be
caused to the ignition
system if the engine is
cranked with plugs/leads
removed
-
and a severe
electric shock can be
experienced.
PART E: FUEL AND EXHAUST
SAFETY FIRST!

Always
wear impervious gloves so that fuel cannot

come
in contact with your
skin.
It can induce cancer.
Q Job 29. Check fuel pipes for leaks.
Check the fuel lines from the fuel tank and into the engine
compartment, looking for signs of chafing, splits and perishing

of the
rubber and plastic parts. Ensure any worm-drive hose

clips used
on the connections are firm and secure.
Q Job 30. Change petrol air filter.
IMPORTANT NOTE: If the HC reading when measured at
the end of the exhaust pipe is outside of the recom-
mended limit while that measured upstream of the
catalytic converter is OK, the cat. is almost certainly
faulty. Have it double-checked by your dealer before
replacing it
-
an expensive component!
30C. Pull on the
tabs
-
and watch
that the springs
don't fall on the
floor as you release
the catches!
30D. Lower the
filter cover and lift
out the filter
element.
31B. If you want to
take the cover right
off, you will have to
unscrew the air
hose clamp
(arrowed). Remove
and replace the
filter element (A).
• Job 31.
Change diesel
air filter.
31A. Take out the
four screws
(arrowed) and lift
off the cover (B). 30B. ...and release

the two
fasteners

(a) and the
two

spring clips
(b).
30A. Unscrew the

two
screws
(arrowed)...
51

• Job 32. Change petrol fuel filter. IMPORTANT NOTES:
• Wear plastic gloves and goggles and have a large rag
and a suitable fire extinguisher ready.
• Place a container beneath the filter to catch fuel
spillage.
• After fitting the new filter in place, refit the casing,
ensure no traces of fuel are left, reconnect the battery and
restart the engine.
• Check carefully to ensure there are no leaks before
refitting the cover.
• Job 33. Drain diesel fuel filter.
IMPORTANT NOTE: Some models are fitted with a water-
in-fuel sensor. Drain the filter when the warning light
comes on. Unplug the sensor from the base of the filter,
first.
FUEL INJECTION
MODELS
32A. The filter is under the
car, ahead of the fuel tank.
E3 INSIDE INFORMATION:
Remove the visible screws
holding the flexible
plastic cover in place.
You can now pull the
front down and out of
the way. E3
32B. Undo the clamp,
remove the outer
casing and renew the
special paper filter,
from your FIAT
dealership. There is
an arrow on the
casing to remind you
which way round it
must be fitted.
33. The fuel filter is
located in the rear of
the engine
compartment. Water
carried in the fuel
accumulates in the
bottom of the filter,
and should not be
allowed to build up.
To drain it position a receptacle under the filter, then unscrew
the knurled tap at the bottom of the filter by a couple of turns.
Do so at the recommended interval, or if the panel indicator
comes on. (See Chapter
2,
Getting to Know Your
Car.)
H INSIDE INFORMATION: Plastic fuel pipes become
brittle and snap. Extra care needed! E3
SAFETY FIRST!
• The high pressure pipework on a fuel injection
system can retain its pressure for days even after the
engine has been switched off.
• When you disconnect the pipework, a jet of fuel can
be emitted under very high pressure
-
strong enough
to penetrate the skin or damage the eyes.
• NEVER work on the fuel pipework when the engine
is running (except when bleeding Diesel injectors).
• ALWAYS place a rag over a union while it is being
undone until all the pressure has been let out of the
system.
• You are recommended to wear strong rubber gloves
and goggles when disconnecting the fuel injection
system's high pressure pipework. Always disconnect
VERY slowly, letting pressure out progressively.
• See Chapter 6, PART F: Job 8 for details of how to
depressurise the system.
• Disconnect the battery negative earth before
working on the fuel system.
• Work outdoors and away from sources of flame or
ignition.
• ALWAYS wear rubber gloves
-
don't let your
skin

come into contact with fuel.
IMPORTANT NOTE: All Tipo/Tempra diesel engines are
self-bleeding and there should be no need to bleed air
out of the system manually.
• Job 34. Change diesel fuel filter.
Drain the fuel filter. Unscrew the complete filter canister from
its head, in the same way that you would an engine oil filter.
First undip the sensor plug (if fitted) from the base of the unit.
^ 34A. If it is too tight to
^^ - unscrew by hand, use an oil
filter wrench on the lower,
flatted zone (C). Wipe the underside of the filter head,
fill the new filter
with fuel...
34B. ...lightly
lubricate its seal
with fuel, then
screw it onto the
filter head. Once it
is 'nipped up',
tighten it as far as
possible by hand,
without
'murdering' it
-
so
that you CAN
remove it next
time!

IMPORTANT NOTE: • All Tipo/Tempra diesel engines are
self-bleeding and there should be no need to bleed air
out of the system manually.
• If the engine does not eventually re-start, check all the
unions for the fuel inlet pipe and the other unions,
replacing the sealing washers if necessary, to eliminate
any air leaks.
Q Job 35. Check/adjust petrol engine idle and
emissions.
Setting the idle speed and mixture is not just a matter of

making
the car run smoothly and economically; it's also a
question of allowing it to run within the legal hydrocarbon
(HC), Nitrous Oxide (NO) and carbon monoxide (CO) emission
limits. If it
is
outside limits, the car will fail the annual test.
(However, a worn engine will fail even if the carburettor or
injection system is correctly set up.)
FACT FILE: ESSENTIAL
PREPARATIONS
• When tuning the engine you should
adjust the carburettor (when fitted) last
of all, as its settings will be affected by
the state of tune of the rest of the engine.
• Ignition dwell angle and timing must be correct, the
air
filter
should be clean, there should be no air leaks

on
the induction system, and all electrical components

and
the air conditioning (if fitted) should be switched
off.
• Get the engine to full operating temperature before
checking and adjusting.
• If
you
warm the engine on tick-over (instead of on a
journey), it won't be hot enough until you have heard
the electric cooling fan cut in twice.
Q INSIDE INFORMATION: These jobs require the use of a
tachometer (rev-counter) and an exhaust gas analyser to
achieve any degree of accuracy. If you don't own them -
and relatively inexpensive tools are now available
-
you

may
wish
to have the work carried out by your local FIAT
dealer. D

ROUGH
GUIDE: Within each section is a description of how
you
can
get the car running tolerably well without any

specialist
equipment, so that you can take it to your FIAT

dealership
for accurate (and MoT-able!) tuning.
35A. Check the float
level with the carburettor
in the position shown.
Distance (c) should be
30mm with gasket fitted.
Bend tab (2) to adjust
-

but the tab should
remain virtually perpen-
dicular. Do NOT adjust
items (1)or (3)1
35B. IDLE SPEED
ADJUSTMENT: Connect a
rev-counter according to
the maker's instructions,
and check the idle speed.
clockwise increases the
idle speed, anti-clockwise
reduces it. Set the idle
speed in accordance with
Chapter
3,
Facts and
Figures.
ROUGH GUIDE: Turn the screw until the engine is running at
the slowest speed at which it runs smoothly and evenly.
MIXTURE ADJUSTMENT: Check that the idle speed is correct
and make sure that the engine is at full operating temper-
ature. Connect an exhaust gas analyser as instructed by the
maker. If the CO reading is outside the range shown in
Chapter
3,
Facts and Figures, adjustment as follows:
Use a narrow-blade screwdriver and turn the screw (2)
clockwise to weaken (reduce) or anti-clockwise to richen
(increase) the reading.
ROUGH GUIDE: Turn the mixture screw inwards (clockwise).
As you do so, the tick-over speed will increase, until the point
comes where the engine starts to run 'lumpily'. Back off the
screw until the engine runs smoothly again, and then some
more until the speed just starts to drop. At this point, screw
the adjuster back in by a quarter-turn and you'll be
somewhere near the optimum setting for smooth running.
IMPORTANT NOTE: After setting the mixture adjustment,
re-check and, if necessary, re-adjust the idle speed.
CARBURETTOR MODELS ONLY
TAMPER PROOFING: All Tipo carburettors originally had a
tamper-proof seal placed over the mixture adjustment screw.

These
seals are to prevent anyone unauthorised from altering

the
mixture and exhaust emissions. In certain countries these

seals
must be retained by law.

If the
seal
is
a plastic cap placed over the adjuster screw, it can

be
broken
off with pliers. If it is a plug within the screw recess,

force
it out with a sharp object.
35C. This illustration
shows the correct
settings for the
choke fast idle
adjustment (manual
choke only) and the
automatic anti-
flooding device
adjustment. See
following page.

G Step 17: Now repeat this operation on the remaining
valves.
G Step 18: Wash the whole cylinder head again using
paraffin and an old brush, making sure that all traces of
grinding paste are removed, then dry off. Use compressed air

if
available.
SAFETY FIRST!
•
Treat
compressed air with respect. Always wear

goggles
to protect your eyes.
•
Never
allow the airline nozzle near any of the body Sep apertures.
H INSIDE INFORMATION! Check the height of the valve
springs against new ones if possible, but if not, compare
them with each other. If any are shorter than the others,
play safe and replace the complete set. They are bound
to have suffered fatigue which could cause premature
valve failure. H
G Step 19: To install the valves, start from one end.
Lubricate a valve stem with fresh engine oil and slide it in to its
guide.
G Step 20: Locate a new valve stem seal over the stem of

the valve
(if applicable) and push down into contact with the
guide. Position the seal on its seat using a suitable metal tube.
G Step 21: Refit the flat washer and spring seat.
G Step 22: Position the inner and outer springs and the

spring
cap.
G Step 23: Re-apply the valve spring compressor and

compress
the springs enough to allow you to engage the split
collets
in
the stem grooves.
D INSIDE INFORMATION! Grease the grooves so that the
collets will 'stick' in place. The collets are easily fitted by
'sticking' the backs of them onto the end of a screw-
driver with some grease and feeding them into
position. B
G Step 24: Carefully release the spring compressor and

check
that the collets are correctly located. Tap the end of the

stem with
a hammer, to bed them in.
G Step 25: Fit the remaining valves.
Job 5. Petrol engine -
dismantling.
G Step 1: Familiarise yourself with the layout of the engine.

Refer to
illustration Job
2-1
for an exploded view of the

engine
components.
G Step 2: Drain the engine oil. Remove the cylinder head.
See
Job 2.

G Step 3: Remove the distributor. See PART D: IGNITION
• Step 4:
Remove the petrol
pump and spacer
block, if the
mechanical type
(a). (Electric fuel
pumps are in the
fuel tank.)
• Step 5:
Remove and
discard the oil filter
illustration Job
5-4,

• Step 6: Remove the water pump complete with its distri-
bution pipe, and the power steering pump (if fitted).
Q Step 7: Remove the alternator, the crankshaft pulley, the
crankshaft and camshaft sprockets, the cam belt tensioner
and the cam belt cover backplate.
• Step 8:
Remove the
auxiliary shaft
sprocket...
• Step 9: ...the
end plate and
seal, and remove
the auxiliary shaft.
• Step 10:
Undo and remove
the clutch, and
then the flywheel.
• Step 11: Turr
engine assembly c
remove the sump
and remove the crankcase breather (see
part b) with its pipe.