tow FORD GRANADA 1985 Service User Guide

If the crankcase ventilation oil separator was
removed, apply a liquid locking agent to its
tube before pressing it into the cylinder block.
1Make sure that the clutch is centred.
2Apply a smear of grease or anti-seize
compound to the gearbox input shaft splines.
3With the aid of an assistant, offer the
gearbox to the engine. If the input shaft is
reluctant to enter the clutch, rock the gearbox
slightly or turn the crankshaft back and forth.
Support the gearbox until it is engaged with
the dowels on the engine - do not leave it
hanging on the input shaft.4Refit the engine-to-bellhousing bolts, the
bracing strap and the starter motor.
1Sling the engine/gearbox unit so that it
hangs at an angle of approximately 45°.
2Lower the unit into the engine bay, at the
same time moving it towards the rear of the
vehicle. Have an assistant watch as the unit is
lowered to check that no pipes, wires etc are
fouled or trapped.
3Raise the gearbox as the engine is lowered
until the unit takes up its correct position.
Secure the engine bearers to the mountings
and refit the gearbox crossmember.
4The remainder of refitting is a reversal of the
removal procedure. Refer to Section 6. Also
refer to Section 49, paragraph 9.
5Before starting the engine, refer to Section 51.
1On manual gearbox models, check that the
clutch is centred correctly. Apply a smear of
grease or anti-seize compound to the gearbox
input shaft.
2On automatic transmission models, check
that the torque converter is fully engaged with
the transmission oil pump.
3Sling the engine so that it is roughly horizontal.Lift it and position it over the engine bay.
4Lower the engine into place. Have an
assistant watch as the unit is lowered to check
that no pipes, wires etc are fouled or trapped.
5Guide the engine onto the transmission,
raising or lowering the transmission slightly if
necessary. Do not place any weight on the
transmission input shaft. With manual gearbox
models, rock the engine gently from side to
side to encourage the input shaft to enter the
clutch.
6When the engine and transmission are fully
engaged, refit the engine-to-bellhousing bolts.
Do not overlook the earth strap.
7Lower the engine so that the engine bearers
engage with the mountings. Fit the mounting
nuts and remove the lifting tackle.
8On automatic transmission models, bolt the
torque converter to the driveplate.
9The remainder of refitting is a reversal of the
removal procedure. Note the following
additional points:
a)Refill the engine with oil
b)Check the transmission oil level if
necessary
c)Adjust the tension of the accessory
drivebelts
d)Adjust the throttle cable
e)Adjust the downshift cable when
applicable
f)Refill the cooling system
10Before starting the engine, see Section 51
49Engine - refitting without
gearbox/transmission
48Engine - refitting with manual
gearbox
47Engine and gearbox -
reconnection
SOHCengines 2A•19
2A
45.16 Holding the crankshaft pulley with
two bolts and a lever while tightening the
central bolt
45.13 Timing belt tension checking sequence
A No 1 at TDCB 60°BTDC for checkingC Return to TDC for adjustment
procarmanuals.com

the pump cover, recover the washer, and
withdraw the spring and plunger (see
illustrations).
6Thoroughly clean all components in petrol
or paraffin, and wipe dry using a non-fluffy rag.
7Examine the rotors and the pump casing for
signs of excessive wear on the machined
surfaces. If wear is evident, the complete
pump assembly must be renewed, as spare
parts are not available individually.
8Commence reassembly by lubricating the
relief valve plunger. Fit the plunger and the
spring, and screw the plug into place, ensuring
that the washer is in place under the plug.
9Lubricate the rotors, and fit them to the
pump casing with the punch marks facing the
pump cover (see illustration).
10Refit the pump cover and tighten the
securing bolts.
11Prime the pump before refitting.
1Examine all the teeth on the sprockets. If the
teeth are “hooked” in appearance, renew the
sprockets.
2Examine the chain tensioner for wear and
renew it if necessary.
3Examine the chain for wear. If it has been in
operation for a considerable time, or if when
held horizontally (rollers vertical) it takes on a
deeply bowed appearance, renew it.Note: New connecting rod bolts and a new oil
pick-up pipe gasket must be used on refitting.
1Remove the sump and the cylinder head.
2Unscrew the two securing bolts, and
remove the oil pick-up pipe (see illustration).
Recover the gasket and discard it.
3Unscrew the four securing nuts and
withdraw the oil baffle from the studs on the
main bearing caps (see illustration).
4Removal is as described in Part A, Section 21,
paragraphs 2 to 5 of this Chapter, and refitting
as described in Part A, Section 37, noting the
following additional points:
a)Take note of the orientation of the bearing
shells during dismantling, and ensure that
they are fitted correctly during reassembly.
b)When fitting the pistons, ensure that the
arrow on the piston crown and the letter F
on the face of the connecting rod are
pointing towards the front of the engine.
c)Use new connecting rod bolts on
reassembly; before fitting, oil the threads
and the contact faces of the bolts. Tighten
the bolts to the three stages given in the
Specifications.
d)Refit the oil baffle and tighten the securing
nuts.
e)Clean the mating faces of the cylinder
block and the oil pick-up pipe, and refit
the pick-up pipe using a new gasket.
f)Refit the cylinder head and the sump.Note: A new crankshaft rear oil seal and a new
rear oil seal housing gasket should be used on
reassembly.
1With the engine removed from the vehicle,
remove the timing chain and crankshaft
sprocket, and the flywheel/driveplate.
2Remove the pistons and connecting rods. If
no work is to be done on the pistons and
connecting rods, there is no need to push the
pistons out of the cylinder bores.
3Unbolt the crankshaft rear oil seal housing
and remove it from the rear of the cylinder
block. Recover the gasket and discard it.
4Unscrew the two securing bolts and remove
the sump mounting plate from the front of the
cylinder block (see illustration).
5Check the main bearing caps for identification
marks, and if necessary use a centre punch to
identify them (see illustration).
6Before removing the crankshaft, check that
the endfloat is within the specified limits by
inserting a feeler blade between the centre
crankshaft web and one of the thrustwashers
(the thrustwashers are fitted to the crankcase,
not the bearing cap). This will indicate whether
or not new thrustwashers are required.
7Unscrew the bolts and tap off the main
bearing caps complete with bearing shells.
8Lift the crankshaft from the cylinder block,
and remove the rear oil seal if it is still in place
on the crankshaft.30Crankshaft and main bearings
- removal and refitting29Pistons and connecting rods
- removal and refitting
28Oil pump drive chain and
sprockets - examination and
renovation
DOHCengine 2B•17
2B
27.5b . . . and withdraw the spring and
plunger27.9 The punch marks (arrowed) on the oil
pump rotors must face the pump cover29.2 Removing the oil pick-up pipe
29.3 Withdrawing the oil baffle30.4 Unscrewing a sump mounting plate
securing bolt30.5 Main bearing cap identification mark
(arrowed)
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9Extract the bearing shells, and recover the
thrustwashers, keeping them identified for
location.
10The crankshaft and bearings can be
examined and if necessary renovated.
11Commence refitting as follows(see
illustration).
12Wipe the bearing shell locations in the
crankcase, and the crankshaft journals with a
soft non-fluffy rag.
13If the old main bearing shells are to be
renewed (not to do so is a false economy,
unless they are virtually new) fit the five upper
halves of the main bearing shells to their
locations in the crankcase.
14Fit the thrustwashers to the centre main
bearing location, using a little grease to retain
them if necessary. The oil grooves in the
thrustwashers must face outwards (ie facing
the crankshaft webs). Note that where
standard thrustwashers have been fitted in
production, the centre main bearing is
unmarked, but if oversize (0.38 mm)
thrustwashers have been fitted, the centre
main bearing will carry a yellow paint mark.
15Lubricate the crankshaft journals and the
upper and lower main bearing shells with
clean engine oil, then carefully lower the
crankshaft into the crankcase.
16Lubricate the crankshaft main bearing
journals again, and then fit the main bearing caps
in their correct locations, with the arrows on the
caps pointing towards the front of the engine.
17Fit the main bearing cap bolts, noting that
the studded bolts secure bearing caps Nos 3
and 5.
18Lightly tighten all the securing bolts, then
progressively tighten all bolts to the specified
torque.
19Check that the crankshaft rotates freely.
Some stiffness is to be expected with newcomponents, but there must be no tight spots
or binding.
20Check that the crankshaft endfloat is
within the specified limits by inserting a feeler
blade between the centre crankshaft web and
the thrustwashers.
21Refit the sump mounting plate to the front
of the cylinder block, and tighten the securing
bolts to the specified torque.
22Carefully wind a thin layer of tape around
the rear edge of the crankshaft to protect the
oil seal lips as the rear oil seal is installed.
23Refit the crankshaft rear oil seal housing,
using a new gasket, and tighten the securing
bolts to the specified torque.
24Install the new oil seal with reference to
Section 24.
25With the oil seal installed, carefully pull the
tape from the edge of the crankshaft.
26Refit the pistons and connecting rods as
described previously in this Chapter.
27Refit the flywheel/driveplate, and the
timing chain and crankshaft sprocket.
Proceed as described in Part A, Section 27
of this Chapter, noting that the production
bearing undersizes are indicated as follows.
Yellow or red paint marks on crankshaft —
standard diameter main bearing journals.
Green line on crankshaft front counterweight
— main bearing journals 0.25 mm
undersize.
Green spot on counterweight — big-end
bearing journals 0.25 mm undersize.
Refer to Part A, Section 25 of this Chapter,
but note that the connecting rod bolts should
be renewed on reassembly, and when
renewing the cylinder head bolts, the latest
type bolts with hexagonal heads should
always be used.
Proceed as described in Part A, Section 35
of this Chapter, noting the following points.
a)If the cylinder head has been removed,
pay particular attention to the note at the
beginning of Section 18.
b)If removed during any dismantling
operations, new flywheel driveplate bolts
and connecting rod bolts must be used.
c)After reassembling the main engine
components, refer to paragraph 3 of
Section 14 and refit the ancillary
components listed.Refer to Part A, Section 51 of this Chapter,
but note that when the engine is first started, a
metallic tapping noise may be heard. This is
due to the timing chain tensioner plunger
assembly taking time to pressurize with oil,
resulting in a temporarily slack chain. The
noise should stop after a short time, once oil
pressure has built up.
1When engine performance is down, or if
misfiring occurs which cannot be attributed to
the ignition or fuel system, a compression test
can provide diagnostic clues. If the test is
performed regularly it can give warning of
trouble before any other symptoms become
apparent.
2The engine must be at operating
temperature, the battery must be fully charged
and the spark plugs must be removed. The
services of an assistant will also be required.
3Disable the ignition system by dismantling
the coil LT feed. Fit the compression tester to
No 1 spark plug hole. (The type of tester which
screws into the spark plug hole is to be
preferred.)
4Have the assistant hold the throttle wide
open and crank the engine on the starter.
Record the highest reading obtained on the
compression tester.
5Repeat the test on the remaining cylinders,
recording the pressure developed in each.
6Desired pressures are given in the
Specifications. If the pressure in any cylinder
is low, introduce a teaspoonful of clean engine
oil into the spark plug hole and repeat the test.
7If the addition of oil temporarily improves
the compression pressure, this indicates that
bore or piston wear was responsible for the
pressure loss. No improvement suggests that
leaking or burnt valves, or a blown head
gasket, may be to blame.
8A low reading from two adjacent cylinders is
almost certainly due to the head gasket
between them having blown.
9On completion of the test, refit the spark
plugs and reconnect the coil LT feed.
35Compression test -
description and interpretation
34Initial start-up after overhaul
or major repair
33Engine reassembly - general
information
32Examination and renovation -
general information
31Crankshaft and bearings -
examination and renovation
2B•18DOHCengine
30.11 Crankshaft main bearings and
associated components
1 Bearing cap
2 Thrustwasher
3 Stud for oil baffle
4 Identification markings
5 Bearing shell without oil groove
6 Bearing shell with oil groove
7 Bearing seat in cylinder block
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Refer to Part A, Section 33 of this Chapter.
The crankcase ventilation system is very
simple. One hose joins the rear air inlet
trunking to the oil filler cap, and another hose
joins the left-hand rocker cover to the plenum
chamber. Filtered (and metered) air passes
through the oil filler cap into the engine, and is
extracted, along with any other fumes, via the
second hose. Refer to Chapter 1 for
maintenance of the system.
Refer to Part A, Section 35 of this Chapter
but disregard the reference to new cylinder
head bolts when these are of the conventional
(hexagon-headed) type. Only Torx type bolts
need to be renewed.
1Wipe the bearing shell locations in the
crankcase with a clean rag and fit the mainbearing upper half shells in position (see
illustration).
2Clean the main bearing shell locations and
fit the half shells in the caps.
3Fit the flanged shells to No 3 bearing.
4Lubricate the shells and the main bearing
journals with engine oil.
5Lubricate a new rear oil seal and fit it to the
end of the crankshaft, lips facing inwards.
6Carefully place the crankshaft in position
(see illustration).
7Make sure that the surfaces are clean, then
apply a film of sealant (Ford No A-70SX-
19554-BA, or equivalent) to the mating faces
of the crankcase and the rear main bearing
cap.
8Fit the bearing caps, with the arrows on the
caps pointing to the front of the engine (see
illustration).
9Insert the main bearing cap bolts. The bolts
for bearing caps No 2 and 3 have rounded
heads, and are 14 mm (0.55 in) longer than
those for caps 1 and 4.
10Tighten the main bearing cap bolts
progressively to the specified torque.
11Make sure that the crankshaft is free to
rotate. Some stiffness is to be expected withnew components, but there should be no tight
spots or binding.
12Press the crankshaft rear oil seal firmly
against the rear main bearing.
13Check the crankshaft endfloat, levering
the crankshaft back and forth and inserting
feeler blades between the crankshaft and No 3
main bearing (see illustration). Excessive
endfloat can only be due to wear of the
crankshaft or bearing shell flanges.
14Coat the rear main bearing cap sealing
wedges with sealant and press into position
with a blunt screwdriver(see illustration).The
rounded end of each wedge carries a red paint
mark, which must face the bearing cap.
1Slide the spacer ring onto the camshaft,
chamfered side first. Refit the Woodruff key if
it was removed.
2Lubricate the camshaft bearings, the
camshaft and thrust plate.
3Carefully insert the camshaft from the front
and fit the thrust plate and self-locking
securing bolts. Tighten the bolts to the
specified torque (see illustrations).
4Fit the timing cover dowels and O-ring seals
onto the crankcase. The chamfered end of the
dowels must face outwards towards the timing
cover (see illustration).
5Ensure that the mating faces of the
crankcase and front intermediate plate are
32Camshaft and intermediate
plate - refitting
31Crankshaft and main
bearings - refitting
30Engine reassembly - general
information
29Crankcase ventilation system -
general information
28Flywheel ring gear -
examination and renovation
V6 engines 2C•15
2C
31.1 Rear main bearing shell in the
crankcase31.6 Placing the crankshaft in position
31.8 Main bearing cap markings - arrow
points to front of engine31.13 Checking crankshaft endfloat31.14 Fitting the rear main bearing cap
sealing wedges
27.16b Removing the oil pump cover
If the old bearings are being
refitted (although this is false
economy unless they are
practically new) make sure
they are fitted in their original positions.
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1Make sure that the oil pump and crankcase
mating faces are clean.
2Check that the washer on the oil pump
driveshaft is located correctly (see illustration).
3If a new or overhauled pump is being fitted,
prime it by injecting oil into it and turning it by
hand.
4Insert the oil pump driveshaft into the block
with the pointed end towards the distributor
(see illustration).
5Fit the assembled oil pump, using a new
gasket. Insert the pump-to-block bolts and
tighten them to the specified torque (see
illustration).
6Refit the sump.Refer to Part A, Section 40 of this Chapter.
2.8 litre engines
1Lubricate a new oil seal and fit it to the
timing cover (see illustration).
2If the Woodruff keys were removed from the
camshaft and crankshaft, refit them.
3Refit the crankshaft gear, if removed, using
a length of tube to drive it home.
4Position the camshaft and crankshaft so
that their keyways are facing each other(seeillustration).Slide the camshaft gear onto the
camshaft, rotating the shafts slightly if
necessary so that the marks on the two gears
are aligned. Remember that there are two
marks on the crankshaft gear.
5Fit the camshaft gear retaining bolt and
washer(see illustration).Tighten the bolt to
the specified torque.
6Apply sealant to the mating faces of the
timing cover and the intermediate plate.
7Position a new gasket on the intermediate
plate and fit the timing cover to the cylinder
block (see illustrations).
8Fit the timing cover bolts, but do not tighten
them yet.
9Oil the sealing face of the crankshaft pulley
or damper. Fit the pulley/damper and the
central bolt and washer, applying sealant to
the inboard face of the washer (see
illustration). Draw the pulley/damper into
36Timing cover and drive -
refitting
35Flywheel/driveplate and
adapter plate - refitting34Oil pump - refitting
V6 engines 2C•17
2C
34.2 Oil pump driveshaft washer location34.4 Fitting the oil pump driveshaft34.5 Oil pump in position
36.7a Timing cover gasket in position
36.1 Timing cover oil seal36.5 Camshaft gear washer and bolt36.4 Crankshaft and camshaft gears
correctly aligned
36.7b Fitting the timing cover36.9 Fitting the crankshaft pulley
procarmanuals.com

See Chapter 1, Section 21.
1On 2.0 litre DOHC engines only, remove the
water pump/alternator drivebelt as described
in the previous Section.
2Loosen the alternator lower mounting
through-bolt, then remove the alternator upper
mounting bolt, and swing the alternator away
from the engine.
3Unscrew the central securing bolt, and
withdraw the drivebelt tensioner assembly.
4Commence refitting by positioning the
tensioner on the cylinder block, ensuring that
the lug on the rear of the tensioner bracket
engages with the corresponding hole in the
cylinder block (see illustration). Tighten the
securing bolt.
5Swing the alternator into position to align
the upper mounting bolt hole with the
corresponding hole in the drivebelt tensioner
assembly, then refit and tighten the upper
mounting bolt, then the lower throughbolt.
6Check the full length of the drivebelt for cracks
and deterioration and renew if necessary.
7Fit the drivebelt using a reversal of the
removal procedure, and release the tensioner
to tension the drivebelt.
1Disconnect the battery negative lead.
2Depressurize the cooling system by
unscrewing the expansion tank cap. Take
precautions against scalding if the system
is hot.
3Slacken the hose clips on all the hoses
which are connected to the tank. Pull off and
plug those hoses which are above the
waterline.4Remove the two screws which secure the
tank. Tilt the tank so that the coolant lies away
from the outlets, then disconnect and plug the
remaining hose.
5Disconnect the coolant level sensor, when
fitted, and remove the tank.
6Refit by reversing the removal operations.
Top-up the cooling system on completion.
1The temperature gauge sender is located
towards the front of the engine. On SOHC
models it is just below the inlet manifold (see
illustration); on V6 models it is just below the
top hose connection on the front of the left-
hand cylinder head, and on DOHC models it is
located at the front of the inlet manifold (see
illustration).
2Slacken the expansion tank cap to release
pressure in the cooling system, taking
precautions against scalding if the system
is hot.Tighten the cap again to minimise
coolant loss.
3Disconnect the wiring from the sender unit.
Unscrew and remove it, being prepared for
some coolant spillage.
4Smear sealant on the sender unit threads
before refitting, then insert and tighten it.
Reconnect the wiring.
5Top-up the cooling system if necessary,
then run the engine and check the operation of
the temperature gauge.The cooling fan switch is located in the end
of the thermostat housing.
Removal and refitting of the switch is as
described for the temperature gauge sender in
the previous Section.
Models before April 1992
Front
1Disconnect the battery negative lead.
2Remove the instrument cluster (Chapter 13).
3Remove the facia top (Chapter 12).
4Unclip the two control cables from the
control levers (see illustration).
5On air conditioned models, disconnect the
hoses from the vacuum switch.
6Remove the four screws which secure the
heater control assembly. Withdraw the
assembly from the facia.
7When refitting, secure the control assembly
with the four screws. Reconnect the vacuum
switch (when applicable) and the control
cables. Adjust the control cables if necessary
by altering the positions of the cable clips.
8When satisfied with the operation of the
cables, refit the other disturbed components.
Rear
9Remove the centre console (Chapter 12).
10Unclip the control cables and remove the
control unit.
11Refit in the reverse order to removal.
Models from April 1992
12Undo the two instrument panel surround
retaining screws, then carefully release the
retaining clips and remove the surround from
the facia.
13Pull off the three knobs from the heater
and ventilation controls to gain access to the
two hidden central vent panel retaining
screws. Slacken and remove the four panel
retaining screws and partially withdraw the
17Heater controls - removal and
refitting
16Cooling fan switch - removal
and refitting
15Temperature gauge sender -
removal and refitting
14Expansion tank - removal and
refitting
13Water pump/alternator
drivebelt tensioner - removal
and refitting
12Water pump/alternator
drivebelt(s) - inspection,
renewal and adjustment
Cooling, heating and ventilation systems 3•7
3
13.4 On refitting, ensure the drivebelt
tensioner lug (A) engages with hole in the
mounting bracket (B)15.1a Temperature gauge sender (manifold
removed)15.1b Temperature gauge sender unit
location (arrowed)
17.4 Heater control cable clip (arrowed)
viewed through windscreen
procarmanuals.com

towards the engine and remove the old
drivebelt.
5Fit the new drivebelt, position the
compressor to achieve the correct belt tension
and tighten the strap and pivot bolts.
6Refit and secure the fan, when applicable,
and reconnect the battery.
7Recheck the belt tension after it has run for
at least 10 minutes under load.
Condenser fan and motor
8Disconnect the battery earth lead and
remove the radiator grille.
9Disconnect the fan wiring connector at the
right-hand side of the condenser.
10Remove the three securing bolts andremove the fan and motor(see illustration).
Turn the frame to position the fan wiring on the
dehydrator side to avoid damaging the wiring.
Take care also not to damage the condenser
fins or tube.
11Unclip the fan guard from the top of the
frame.
12To remove the fan blades from the motor,
remove the retaining nut and circlip. The nut
has a left-hand threadie it is undone
clockwise.
13With the blades removed, the motor can
be unscrewed from the frame.
14Reassemble and refit in the reverse order
of dismantling and removal.
De-ice thermostat
15Disconnect the battery negative lead.
16Disconnect the vacuum hoses from the
plenum chamber cover. Pull off the rubber seal
and remove the plenum chamber cover; it is
secured by four screws and one nut.
17Disconnect the thermostat from the
evaporator casing and remove it. Also remove
the thermostat probe.
18Refit by reversing the removal operations.
Heater water valve
19The heater water valve used with air
conditioning is vacuum-operated. It is located
on the right-hand side of the engine bay, near
the bulkhead. 20Drain the cooling system.
21Slacken the hose clips and detach the
coolant hoses from the valve, noting how they
are connected.
22Disconnect the vacuum hose from the top
of the valve.
23Unclip the valve from its bracket and
remove it.
24Refit by reversing the removal operations.
Refill the cooling system.
3•10Cooling, heating and ventilation systems
22.4 Air conditioning compressor adjuster
strap bolts (arrowed)22.10 Condenser fan securing bolts
(arrowed)
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The exhaust system fitted in production is
made of aluminised steel, with stainless steel
used in the endplates and baffles of the rear
silencer. Individual sections of the system are
easily renewed in service.
Emission control for the UK market is
achieved largely by the inherent efficiency of
the fuel, ignition and engine management
systems. A welcome spin-off from such
efficiency is remarkably good fuel economy for
a vehicle of such size and weight.
Precautions
Fuel
Many of the procedures in this Chapter
require the removal of fuel lines and
connections which may result in some fuel
spillage. Residual pressure in fuel-injection
systems will remain in the fuel lines long after
the vehicle was last used, therefore extra care
must be taken when disconnecting a fuel line
hose. Loosen any fuel hose slowly to avoid a
sudden release of pressure which may cause
fuel spray. As an added precaution place a rag
over each union as it is disconnected to catch
any fuel which is forcibly expelled. Before
carrying out any operation on the fuel system
refer to the precautions given in “Safety first!”
at the beginning of this Manual and follow
them implicitly. Petrol is a highly dangerous
and volatile liquid and the precautions
necessary when handling it cannot be
overstressed
Tamperproof adjustment screws
Certain adjustment points in the fuel system
(and elsewhere) are protected by tamperproof
caps, plugs or seals. The purpose of such
tamperproofing is to discourage, and to deter,
adjustment by unqualified operators.
In some EU countries (though not yet in the
UK) it is an offence to drive a vehicle with
missing or broken tamperproof seals. Before
disturbing a tamperproof seal, satisfy yourself
that you will not be breaking local or national
anti-pollution regulations by doing so. Fit a
new seal when adjustment is complete when
this is required by law.
Do not break tamperproof seals on a vehicle
which is still under warranty.
Catalytic converter
The catalytic converter is a reliable and
simple device which needs no maintenance in
itself, but there are some facts of which an
owner should be aware if the converter is to
function properly for the full service life.
a)DO NOT use leaded petrol in a car
equipped with a catalytic converter the
lead will coat the precious metals,
reducing their converting efficiency and
will eventually destroy the converter.
b)Always keep the ignition and fuel systems
well-maintained in accordance with the
manufacturer’s schedule - particularly,
ensure that the air cleaner filter element,
the fuel filter and the spark plugs are
renewed at the correct interval - if the inletair/fuel mixture is allowed to become too
rich due to neglect, the unburned surplus
will enter and burn in the catalytic
converter, overheating the element and
eventually destroying the converter.
c)If the engine develops a misfire, do not
drive the car at all (or at least as little as
possible) until the fault is cured - the
misfire will allow unburned fuel to enter
the converter, which will result in
overheating, as noted above.
d)DO NOT push- or tow-start the car - this
will soak the catalytic converter in
unburned fuel, causing it to overheat when
the engine does start - see b) above.
e)DO NOT switch off the ignition at high
engine speeds - if the ignition is switched
off at anything above idle speed,
unburnedfuel will enter the (very hot)
catalytic converter, with the possible risk
of igniting on the element and damaging
the converter.
f)DO NOT use fuel or engine oil additives -
these may contain substances harmful to
the catalytic converter.
g)DO NOT continue to use the car if the
engine burns oil to the extent of leaving a
visible trail of blue smoke - the unburned
carbon deposits will clog the converter
passages and reduce the efficiency; in
severe cases the element will overheat.
h)Remember that the catalytic converter
operates at very high temperatures -
hence the heat shields on the car’s
underbody and the casing will become hot
enough to ignite combustible materials
which brush against it - DO NOT,
therefore, park the car in dry undergrowth,
over long grass or piles of dead leaves.
i)Remember that the catalytic converter is
FRAGILE, do not strike it with tools during
servicing work, take great care when
working on the exhaust system, ensure
that the converter is well clear of any jacks
or other lifting gear used to raise the car
and do not drive the car over rough
ground, road humps, etc, in such a way as
to “ground” the exhaust system.
j)In some cases, particularly when the car is
new and/or is used for stop/start driving, a
sulphurous smell (like that of rotten eggs)may be noticed from the exhaust. This is
common to many catalytic converter-
equipped cars and seems to be due to the
small amount of sulphur found in some
petrols reacting with hydrogen in the
exhaust to produce hydrogen sulphide
(H
2S) gas; while this gas is toxic, it is not
produced in sufficient amounts to be a
problem. Once the car has covered a few
thousand miles the problem should
disappear - in the meanwhile a change of
driving style or of the brand of petrol used
may effect a solution.
k)The catalytic converter, used on a well-
maintained and well-driven car, should
last for between 50 000 and 100 000 miles
- from this point on, careful checks should
be made at all specified service intervals
of the CO level to ensure that the
converter is still operating efficiently - if
the converter is no longer effective it must
be renewed.
See Chapter 1, Section 38.
1On carburettor models only, the air cleaner
can take in both hot and cold air. Hot air is
obtained from a shroud bolted to the exhaust
manifold.
2A flap valve in the air cleaner spout
determines the mix of hot and cold air. The
valve is operated by a vacuum diaphragm.
Vacuum is obtained from the inlet manifold
and is applied via a heat-sensing valve, which
cuts off the vacuum as the temperature of the
incoming air rises. Thus the air cleaner takes in
only hot air on starting from cold, changing
progressively to cold air as the engine warms
up (see illustrations).
3If the system fails, either the engine will take
a long time to warm up (flap stuck in “cold”
position), or it may run roughly and not
develop full power when warm (flap stuck in
“hot” position). Check it as follows.
3Air cleaner temperature control
- description and testing
2Air cleaner and element -
removal and refitting
4•4Fuel and exhaust systems
3.2b Air cleaner heat sensor3.2a Air cleaner vacuum diaphragm unit
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1Check the cost and availability of spare parts
before deciding to dismantle the carburettor. If
the unit has seen much service, fitting a new or
reconditioned carburettor may prove more
satisfactory than any attempt at overhaul.
2Obtain a carburettor repair kit, which will
contain the necessary gaskets, diaphragms
and other renewable items.
3With the carburettor removed from the
vehicle, clean it thoroughly externally and
place it on a clean worksurface.
4 Referringto the exploded view of the
carburettor(see illustration),remove each
component part whilst making a note of its
fitted position. Make alignment marks on
linkages etc.
5Reassemble in the reverse order to
dismantling, using new gaskets, O-rings etc.
6To check the choke pull-down after
reassembly, position the fast idle screw on the
highest step of the cam. Press the pull-down
adjusting screw towards the pull-down
diaphragm and measure the choke valve
opening with a twist drill or gauge rod of the
specified diameter. Adjust if necessary using
a 2 mm Allen key (see illustration).
7After refitting the throttle damper, adjust its
position in the bracket so that with a 2 mm
(0.08 in) feeler blade inserted between the idle
speed adjusting screw and the throttle lever,
the damper plunger is just touching the
actuating lever(see illustration).
8Adjust the idle speed and mixture, and if
necessary the fast idle speed, after refitting the
carburettor.
9Recheck the throttle damper adjustment,
when applicable.
1This is not a routine operation. It should only
be necessary after overhaul, or when a new
carburettor is fitted.
2The idle speed and mixture must be
correctly set and the engine must be at
operating temperature.3Remove the air cleaner and plug the
manifold vacuum connection.
4With the engine running, position the fast
idle screw on the second highest step of the
fast idle cam(see illustration).Measure the
engine speed and compare it with that given in
the Specifications.
5If adjustment is necessary, remove the
tamperproof plug from the fast idle screw by
crushing it with pliers. Stop the engine and
open the throttle to gain access to the screw
with a small screwdriver. Turn the screw a
small amount clockwise to increase the speed,
anti-clockwise to reduce it, then reseat the
screw on the second highest step of the cam
and recheck the engine speed. Repeat as
necessary.
6Fit a new tamperproof cap where this is
required by law, then refit the air cleaner.
Idle speed cannot be adjusted in the usual
way on this carburettor, as it is controlled by
the ESC ll module.
If mixture adjustment is required, proceed
as described in Chapter 1, Section 16.
1Disconnect the battery negative lead.
2Remove the air cleaner.3Disconnect the choke and stepper motor
wiring. The stepper motor multi-plug locking
device must be depressed to release the plug
(seeillustration).
4Unclip the throttle arm from the throttle lever
and remove the throttle cable bracket.
5Disconnect the fuel hose from the
carburettor and plug it. If a crimped type hose
clip is fitted, cut it off and use a worm drive
clip when refitting.
6Disconnect the vacuum pipe(s) from the
carburettor, noting their connecting points if
there is any possibility of confusion.
7Remove the four carburettor-to-manifold
nuts. Check that nothing has been overlooked,
then lift off the carburettor. Recover the
gasket.
8Clean the carburettor and manifold mating
faces, being careful not to sweep dirt into the
manifold.
9Refit by reversing the removal operations. If
the stepper motor has been disturbed, refer to
Chapter 5, Section 19 for the initial
adjustment.
1Check the cost and availability of spare
parts before deciding to dismantle the
carburettor. If the unit has seen much service,
fitting a new or reconditioned carburettor may
prove more satisfactory than any attempt at
overhaul.
2Obtain a carburettor repair kit, which will
contain the necessary gaskets, diaphragms
and other renewable items.
3With the carburettor removed from the
vehicle, clean it thoroughly externally and
place it on a clean worksurface.
4 Referringto the exploded view of the
carburettor(see illustration),remove each
component part whilst making a note of its
fitted position. Make alignment marks on
linkages etc.
5Reassemble in the reverse order to
dismantling, using new gaskets, O-rings etc.
Be careful not to kink the diaphragms.
17Weber 2V carburettor -
dismantling and reassembly
16Weber 2V carburettor -
removal and refitting
15Weber 2V carburettor - idle
speed and mixture adjustments
14Pierburg 2V carburettor - fast
idle adjustment
13Pierburg 2V carburettor -
dismantling and reassembly
Fuel and exhaust systems 4•9
4
14.4 Fast idle adjustment - Pierburg 2V
Tip of fast idle screw is arrowed
13.6 Choke pull-down adjustment13.7 Throttle damper adjustment - Pierburg
2V carburettor
A Actuating lever
B Damper plungerC Damper locknut
D Feeler blade
16.3 Depress locking clip (arrowed) when
disconnecting stepper motor multi-plug
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1Disconnect the battery negative (earth) lead.
2Disconnect the battery positive leads. These
may be protected by a plastic cover. Do not
allow the spanner to bridge the positive and
negative terminals.
3Release the battery hold-down clamp. Lift
out the battery. Keep it upright and be careful
not to drop it - it is heavy.
4Commence by placing the battery in its tray,
making sure it is the right way round. Secure it
with the hold-down clamp.
5Clean the battery terminals if necessary
then reconnect them. Connect the positive
lead first, then the negative lead.
1Should it appear that the alternator is not
charging the battery, check first that the
drivebelt is intact and in good condition and
that its tension is correct. Also check the
condition and security of the alternator
electrical connections and the battery leads.
2Accurate assessment of alternator output
requires special equipment and a degree of
skill. A rough idea of whether output is
adequate can be gained by using a voltmeter
(range 0 to 15 or 0 to 20 volts) as follows.
3Connect the voltmeter across the battery
terminals. Switch on the headlights and note
the voltage reading: it should be between 12
and 13 volts.
4Start the engine and run it at a fast idle
(approx 1500 rpm). Read the voltmeter: it
should indicate 13 to 14 volts.
5With the engine still running at a fast idle,
switch on as many electrical consumers as
possible (heated rear window, heater blower
etc). The voltage at the battery should be
maintained at 13 to 14 volts. Increase the
engine speed slightly if necessary to keep the
voltage up.
6If alternator output is low or zero, check the
brushes. If the brushes are OK, seek expert
advice.7Occasionally the condition may arise where
the alternator output is excessive. Clues to this
condition are constantly blowing bulbs;
brightness of lights vary considerably with
engine speed; overheating of alternator and
battery, possible with steam or fumes coming
from the battery. This condition is almost
certainly due to a defective voltage regulator,
but expert advice should be sought.
8Note that the alternator voltage regulator
can be renewed without removing the
alternator from the vehicle. The procedure is
part of brush renewal.
1Disconnect the battery negative lead.
2Disconnect the multi-plug from the rear of
the alternator. It may be secured by a wire clip.
3Slacken the alternator adjusting and pivot
nut(s), bolt(s)and washer(s)(see illustration).
Swing the alternator towards the engine and
slip the drivebelt(s) off the pulley.
4Support the alternator. Remove the
adjusting and pivot nuts, bolts and washers,
noting the fitted positions of the washers. Lift
out the alternator. Do not drop it, it is fragile.
5Refit by reversing the removal operations.
Tension the drivebelt(s) then tighten the
adjustment strap bolt followed by the pivot nut
and bolt. If there are two pivot bolts, tighten
the front one first.
6Refit the multi-plug and reconnect the
battery.
1The alternator brushes can be inspected or
renewed without removing the alternator from
the vehicle, but disconnect the battery
negative lead first.
2From the rear of the alternator remove the
two screws which secure the voltage
regulator/brush carrier assembly. Withdraw
the assembly (see illustration).
3Measure the length of each brush
protruding from the carrier (see illustration). If
they are worn down to, or below, the minimumspecified, the old brushes will have to be
unsoldered and new ones soldered into place.
Some skill with a soldering iron will be
required; excess heat from the soldering iron
could damage the voltage regulator. When
fitted, the new brushes must move freely in
their holders.
4Clean the slip rings with a cloth moistened
with methylated spirit (see illustration). If they
are badly burnt or damaged, seek expert
advice.
5Refit the assembled brush carrier/voltage
regulator and secure it with the two screws. If
the alternator is on the vehicle, reconnect the
battery negative lead.
1If the starter motor fails to operate, first
check that the battery is charged by switching
on the headlights. If the headlights do not
come on, or rapidly become dim, the battery
or its connections are at fault.
2Check the security and condition of the
battery and starter solenoid connections.
Remember that the heavy lead to the solenoid
is always “live” - disconnect the battery
negative lead before using tools on the
solenoid connections.
8Starter motor - testing on the
vehicle7Alternator - brush renewal
6Alternator - removal and
refitting
5Alternator - testing on the
vehicle
4Battery - removal and refitting
5•4Engine electrical systems
7.3 Measuring brush protrusion7.4 Clean the slip rings (arrowed)
6.3 Alternator mounting details
A Large washer
B Small washer (not always fitted)
C Mounting bracket
D Alternator
Some models have a single pivot bolt
7.2 Removing the voltage regulator/brush
carrier
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