1989 FORD FIESTA recommended oil

Ignition system
Firing order:HCS engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . 1-2-4-3 (No 1 cylinder at timing chain end of engine)
All other engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . 1-3-4-2 (No 1 cylinder at timing belt end of engine)
Spark plugs*:
HCS engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . Champion RS9YCC or RS9YC
1.4 and 1.6 litre CVH (carburettor) engines . . . . . . . . . . . . . . . . . . . . Champion RC7YCC or RC7YC
1.6 litre CVH (EFi fuel injection) and PTE engines Non-turbo models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . Champion RC7YCC4 or RC7YC4
Turbo models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . Champion C61YC
1.6 and 1.8 litre Zetec engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Champion RE7YCC
Electrode gap*:
HCS engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . 1.0 mm
1.4 litre CVH (carburettor) engines . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.8 mm
1.4 litre CVH (CFi fuel injection) and PTE engine . . . . . . . . . . . . . . . . 1.0 mm
1.6 litre CVH (carburettor) engines: With Champion RC7YCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.8 mmWith Champion RC7YC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.7 mm
1.6 litre CVH (EFi fuel injection) engines: Non-turbo models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . 1.0 mm
Turbo models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . 0.7 mm
1.6 and 1.8 litre Zetec engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 mm
Spark plug (HT) leads: HCS engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . Champion LS-28
1.4 and 1.6 litre CVH (carburettor) engines . . . . . . . . . . . . . . . . . . . . Champion LS-14
1.4 litre CVH (CFi fuel injection) and PTE engines . . . . . . . . . . . . . . . Champion LS-14
1.6 litre CVH (EFi fuel injection) engines . . . . . . . . . . . . . . . . . . . . . . . Champion LS-26
1.6 and 1.8 litre Zetec engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Champion type not available
Maximum resistance per lead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 000 ohms * Information on spark plug types and electrode gaps is as recommended b\
y Champion Spark Plug. Where alternative types are used, refer to their
manufacturer’s recommendations.
Braking system
Minimum front brake pad lining thickness . . . . . . . . . . . . . . . . . . . . . . . 1.5 mm
Minimum rear brake shoe lining thickness . . . . . . . . . . . . . . . . . . . . . . . 1.0 mm
Tyres
Tyre pressures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . See “Weekly Checks”
Wiper blades
Windscreen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . Champion X-4803Tailgate/rear window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . Champion X-4103
Torque wrench settingsNm lbf ft
Auxiliary drivebelt cover fasteners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6
Auxiliary drivebelt adjustment: Adjusting bolt (sliding arm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2216
Central (locking) bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . 2216
Pinion (adjuster) nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . 129
Alternator mounting bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2418
Tensioner pulley centre bolt (HCS engines) . . . . . . . . . . . . . . . . . . . . 2015
Engine oil drain plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . 2418
Manual transmission filler/level plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2015
Spark plugs: HCS engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . 1813
CVH and PTE engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
2418
Zetec engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . 1511
Roadwheel nuts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . 71 to 100 52 to 74
Servicing Specifications1•3
1
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The maintenance schedule for these
vehicles, based on the manufacturer’s
recommendations, is as described below -
note that the schedule starts from the
vehicle’s date of registration. These are the
minimum maintenance intervals recommen-
ded by the factory for Fiestas driven daily, but
subjected only to “normal” use. If you wish to
keep your vehicle in peak condition at all
times, you may wish to perform some of these
procedures even more often. Because
frequent maintenance enhances the
efficiency, performance and resale value of
your vehicle, we encourage you to do so. If
your usage is not “normal”, shorter intervals are also recommended - the most important
examples of these are noted in the schedule.
These shorter intervals apply particularly if
you drive in dusty areas, tow a caravan or
trailer, sit with the engine idling or drive at low
speeds for extended periods (ie, in heavy
traffic), or drive for short distances (less
than four miles) in below-freezing
temperatures.
When your vehicle is new, it should be
serviced by a Ford dealer service department
to protect the factory warranty. In many
cases, the initial maintenance check is done
at no cost to the owner. Note that this first
free service (carried out by the selling dealer 1500 miles or 3 months after delivery),
although an important check for a new
vehicle, is not part of the regular maintenance
schedule, and is therefore not mentioned
here.
It should be noted that for the 1992 model
year, for all models except RS Turbo, the
service time/mileage intervals were
extended by the manufacturer to the periods
shown in this schedule. Although these
intervals can be applied retrospectively,
owners of earlier vehicles may notice a
discrepancy between this schedule and the
one shown in the Service Guide supplied
with the vehicle.
1•4Maintenance schedule
1595Ford Fiesta Remake
Every 250 miles (400 km) or weekly
m
m Refer to “Weekly Checks” .
Every 5000 miles (8000 km) or
6 months, whichever occurs first
Note: Frequent oil and filter changes are good for the engine. We
recommend changing the oil at the mileage specified here, or at least
twice a year if the mileage covered is less.
m m Renew the engine oil and filter (Section 3).
Every 10 000 miles (16 000 km) or
12 months, whichever occurs first
Carry out all operations listed above, plus the following:
m mCheck the auxiliary drivebelt (Section 4).
m
m Check under the bonnet for fluid leaks and hose condition
(Section 5).
m
m Check the condition of all engine compartment wiring (Sec-
tion 6).
m
m Check the valve clearance adjustment - HCS engines only
(Section 7).
m
m Check the manual transmission oil level (Section 8).
m
m Check the engine idle speed and mixture - HCS and CVH
engines only, where possible (Section 9).
m
m Check the steering, suspension and roadwheels (Section 10).
m
m Check the driveshaft rubber gaiters and CV joints (Section 11).
m
m Check the exhaust system (Section 12).
m
m Check the underbody, and all fuel/brake lines (Section 13).
m
m Check the brake system (Section 14).
m
m Check the security of all roadwheel nuts (Section 15).
m
m Check the doors, tailgate and bonnet, and lubricate their hinges
and locks (Section 16).
m
m Check the seat belts (Section 17).
m
m Check the condition of the bodywork, paint and exterior trim
(Section 18).
m
m Road test (Section 19).
m
m Check the automatic transmission fluid level (Section 20).
Every 20 000 miles (32 000 km) or
two years, whichever occurs first
Carry out all operations listed above, plus the following:
m mRenew the spark plugs and check the condition of the HT leads
- all engines except Zetec (Section 21).
m
m Clean the idle speed control valve (Weber type) - CVH EFi
engines only (Section 22).
Every 30 000 miles (48 000 km) or
three years, whichever occurs first
Carry out all operations listed above, plus the following:
m m Renew the coolant (Section 23).
m
m Renew the air cleaner filter element and check the air cleaner
temperature control system - carburettor engines only (Sec-
tion 24).
m m Check the emission control systems (Section 25).
m
m Renew the spark plugs and check the condition of the HT leads
- Zetec engines (Section 21).
m
m Renew the automatic transmission fluid (Section 26).
m
m Check the handbrake adjustment (Section 27).
m
m Check the front wheel alignment (Section 28).
Note: If the vehicle is used regularly in dusty or polluted conditions,
the air cleaner filter element should be renewed at more frequent
intervals.
Every 40 000 miles
m
m Renew the timing belt - CVH and PTE engines only (Section 29).
Every 60 000 miles
m
mRenew the timing belt - Zetec engines only (Section 29).
m
m Renew the fuel filter (Section 30).
Every three years
(regardless of mileage)
m m Renew the brake fluid (Section 31).
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21 Spark plug renewal and HTcomponent check
1
Note: Spark plug renewal at this service
interval is only necessary on the HCS, CVH
and PTE engines. On Zetec engines, the
recommended interval for spark plug renewal
is every 30 000 miles or three years.
Spark plug check and renewal
1 It is vital for the correct running, full
performance and proper economy of the engine
that the spark plugs perform with maximum
efficiency. The most important factor in ensuring
this is that the plugs fitted are appropriate for the
engine. The suitable type is given in the
Specifications Section at the beginning of this
Chapter, on the Vehicle Emissions Control
Information (VECI) label located on the
underside of the bonnet (only on models sold in
some areas) or in the vehicle’s Owner’s
Handbook. If the correct type is used and the
engine is in good condition, the spark plugs
should not need attention between scheduled
renewal intervals. Spark plug cleaning is rarely
necessary, and should not be attempted unless
specialised equipment is available, as damage
can easily be caused to the firing ends.
2 Spark plug removal and refitting requires a
spark plug socket, with an extension which can
be turned by a ratchet handle or similar. This
socket is lined with a rubber sleeve, to protect
the porcelain insulator of the spark plug, and to
hold the plug while you insert it into the spark
plug hole. You will also need a set of feeler
gauges, to check the spark plug electrode gap,
and a torque wrench to tighten the new plugs
to the specified torque (see illustration).
3 To remove the spark plugs, first open the
bonnet; the plugs are easily reached at the
top of the engine. Note how the spark plug
(HT) leads are routed and secured by clips,
and on some engines, how they’re positioned
along the channel in the cylinder head cover.
To prevent the possibility of mixing up spark
plug (HT) leads, it is a good idea to try to work
on one spark plug at a time.
4 If the marks on the original-equipment spark
plug (HT) leads cannot be seen, mark the leads
1 to 4, to correspond to the cylinder the lead
serves (No 1 cylinder is at the timing belt/chain
end of the engine). Pull the leads from the plugs
by gripping the rubber boot, not the lead,
otherwise the lead connection may be fractured.
5 It is advisable to soak up any liquid in the
spark plug recesses with a rag, and to remove
any dirt from them using a clean brush,
vacuum cleaner or compressed air before
removing the plugs, to prevent any dirt or
water from dropping into the cylinders. Warning: Wear eye protection
when using compressed air!
6 Unscrew the spark plugs, ensuring that the
socket is kept in alignment with each plug - if
the socket is forcibly moved to either side, the
porcelain top of the plug may be broken off. If
any undue difficulty is encountered when
unscrewing any of the spark plugs, carefully
check the cylinder head threads and tapered
sealing surfaces for signs of wear, excessive
corrosion or damage; if any of these
conditions is found, seek the advice of a Ford
dealer as to the best method of repair.
7 As each plug is removed, examine it as
follows - this will give a good indication of the
condition of the engine. If the insulator nose is
covered with light tan to greyish-brown
deposits, then the mixture is correct, and it is
likely that the engine is in good condition.
8 If the tip and insulator nose are covered
with hard black-looking deposits, then this is
indicative that the mixture is too rich. Should
the plug be black and oily, then it is likely that
the engine is fairly worn, as well as the mixture
being too rich.
9 If the insulator nose of the spark plug is clean and white, with no deposits, this is
indicative of a weak mixture.
10
If you are renewing the spark plugs,
purchase the new plugs, then check each of
them first for faults such as cracked insulators
or damaged threads. Note also that,
whenever the spark plugs are renewed as a
routine service operation, the spark plug (HT)
leads should be checked as described below.
11 The spark plug electrode gap is of
considerable importance as, if it is too large or
too small, the size of the spark and its
efficiency will be seriously impaired. The gap
should be set to the value given in the
Specifications Section of this Chapter. New
plugs will not necessarily be set to the correct
gap, so they should always be checked
before fitting.
12 The spark plug gap is correct when the
correct-size feeler gauge or wire gauge is a
firm sliding fit between the electrodes (see
illustrations) .
13 To adjust the electrode gap, bend open, or
close up, the outer plug electrode until the
correct gap is achieved (see illustration). The
centre electrode should never be bent, as this
may crack the insulation and cause plug failure,
Every 20 000 miles (32 000 km) or two years, whichever
comes first
Every 20 000 miles or two years1•19
21.12b Spark plug manufacturers
recommend using a wire-type gauge when
checking the gap - if the wire or feeler gauge
does not slide between the electrodes with a slight drag, adjustment is required
21.12a Measuring a spark plug gap with a feeler gauge21.2 Tools required for changing spark plugs
21.13 To change the gap, bend the outer
electrode only, and be very careful not to crack or chip the porcelain insulator
surrounding the centre electrode
1
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if nothing worse. If the outer electrode is not
exactly over the centre electrode, bend it gently
to align them. Special spark plug gap adjusting
tools are available from motor accessory shops,
or from certain spark plug manufacturers.
14Before fitting the spark plugs, check that
the threaded connector sleeves at the top of
the plugs are tight, and that the plug exterior
surfaces and threads are clean. Brown
staining on the porcelain, immediately above
the metal body, is quite normal, and does not
necessarily indicate a “leak” between the
body and insulator.
15 Apply a smear of copper-based grease or
anti-seize compound to the threads of each
plug, and screw them in by hand where
possible. Take extra care to enter the plug
threads correctly, as the cylinder head is of
aluminium alloy.
16 When each spark plug is started correctly
on its threads, screw it down until it just seats
lightly, then tighten it to the specified torque
wrench setting. If a torque wrench is not
available - and this is one case where the use of
a torque wrench is strongly recommended -
tighten each spark plug through no more than
1/4 of a turn (CVH and PTE engines) or 1/16 of a
turn (HCS and Zetec engines) after it seats. HCS
and Zetec engines are fitted with taper-seat
spark plugs, identifiable by not having a sealing
washer, and these in particular should NEVER
be overtightened - their tapered seats mean
they are almost impossible to remove if abused.
17 Reconnect the spark plug (HT) leads in
their correct order, using a twisting motion on
the boot until it is firmly seated on the end of
the spark plug and on the cylinder head cover.
Spark plug (HT) lead, distributor
cap and rotor arm check
18 The spark plug (HT) leads should be
checked whenever the plugs themselves are renewed. Start by making a visual check of
the leads while the engine is running. In a
darkened garage (make sure there is
ventilation) start the engine and observe each
lead. Be careful not to come into contact with
any moving engine parts. If there is a break in
the lead, you will see arcing or a small spark
at the damaged area.
19
The spark plug (HT) leads should be
inspected one at a time, to prevent mixing up
the firing order, which is essential for proper
engine operation. Each original lead should
be numbered to identify its cylinder. If the
number is illegible, a piece of tape can be
marked with the correct number, and
wrapped around the lead (the leads should be
numbered 1 to 4, with No 1 lead nearest the
timing belt end of the engine). The lead can
then be disconnected.
20 Check inside the boot for corrosion, which
will look like a white crusty powder. Clean this
off as much as possible; if it is excessive, or if
cleaning leaves the metal connector too badly
eroded to be fit for further use, the lead must
be renewed. Push the lead and boot back
onto the end of the spark plug. The boot
should fit tightly onto the end of the plug - if it
doesn’t, remove the lead and use pliers
carefully to crimp the metal connector inside
the boot until the fit is snug.
21 Using a clean rag, wipe the entire length
of the lead to remove built-up dirt and grease. Once the lead is clean, check for burns,
cracks and other damage. Do not bend the
lead sharply, because the conductor might
break.
22 Disconnect the lead from the ignition coil
by pressing together the plastic retaining
catches (where fitted) and pulling the end
fitting off the coil terminal. Check for corrosion
and for a tight fit. If a meter with the correct
measuring range is available, measure the
resistance of the disconnected lead from its
coil connector to its spark plug connector. If
the resistance recorded for any of the leads
exceeds the value specified, all the leads
should be renewed as a set. Refit the lead to
the coil, noting that each coil terminal is
marked with its respective cylinder number,
so that there is no risk of mixing up the leads
and upsetting the firing order.
23 Inspect the remaining spark plug (HT)
leads, ensuring that each is securely fastened
at the distributor cap or ignition coil and spark
plug when the check is complete. If any sign
of arcing, severe connector corrosion, burns,
cracks or other damage is noticed, obtain new
spark plug (HT) leads, renewing them as a set.
If new spark plug leads are to be fitted,
remove and refit them one at a time, to avoid
mix-ups in the firing order. 24
On models with distributor ignition
systems, refer to Chapter 5B and remove the
distributor cap then thoroughly clean it inside
and out with a dry lint-free rag.
25 Examine the HT lead segments inside the
cap. If they appear badly burned or pitted
renew the cap. Also check the carbon brush
in the centre of the cap, ensuring that it is free
to move and stands proud of its holder. Make
sure that there are no sign of cracks or black
“tracking” lines running down the inside of the
cap, which will also mean renewal if evident.
26 Inspect the rotor arm checking it for
security and also for signs of deterioration as
described above.
27 Refit the cap as described in Chapter 5B
on completion.
22 Idle speed control valve cleaning and maintenance
1
Note: The idle speed control valve may be
mounted on the air cleaner, on the engine
compartment bulkhead, or on the side of the inlet
manifold according to valve make and year of
manufacture. Valves manufactured by Weber are
mounted on the air cleaner and only these valves
require the periodic maintenance described
below. Bulkhead and inlet manifold mounted
valves are manufactured by Hitachi and are
maintenance free. Refer to the warning note in
Section 1 of Chapter 4C before proceeding.
1 Remove the valve as described in Chap-
ter 4C, Section 14.
2 Immerse the valve head in a suitable
container filled with clean petrol, and allow it
to soak for approximately three minutes.
3 Clean the valve bore, slots and piston with
petrol, using a suitable lint-free cloth, then
gently move the piston up and down in its
bore using a small screwdriver (see
illustration) . Ensure that no cloth particles
enter the bore, and do not use the slots to
move the piston.
4 Rinse the valve again with clean petrol, then
dry it using an air line (or other source of
compressed air).
Warning: Wear eye protection
when using compressed air!
5 Clean the mating faces of the valve and the
air filter housing then refit as described in
Chapter 4C, Section 14.
1•20Every 20 000 miles or two years
22.3 Gently move the idle speed control
valve piston up and down in its bore using
a small screwdriver (1.6 litre EFi engine)
1595Ford Fiesta Remake
It’s often difficult to insert spark plugs
into their holes without cross-threading
them. To avoid this possibility, fit a
short piece of rubber hose over the end
of the spark plug. The flexible hose
acts as a universal joint, to help align
the plug with the plug hole. Should the
plug begin to cross-thread, the hose
will slip on the spark plug, preventing
thread damage.
If new spark plug leads are tobe fitted, remove the leads
one at a time and fit each
new lead in exactly the same
position as the old one.
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connecting rods (after removing the cylinder
head and sump) without removing the engine.
However, this is not recommended. Work of
this nature is more easily and thoroughly
completed with the engine on the bench, as
described in Chapter 2D.
2 Compression test-
description and interpretation
2
1 When engine performance is down, or if
misfiring occurs which cannot be attributed to
the ignition or fuel systems, a compression
test can provide diagnostic clues as to the
engine’s condition. If the test is performed
regularly, it can give warning of trouble before
any other symptoms become apparent.
2 The engine must be fully warmed-up to
normal operating temperature, the oil level
must be correct and the battery must be fully
charged. The aid of an assistant will also be
required.
3 On fuel injection engines, refer to Chap-
ter 12 and remove the fuel pump fuse from the
fusebox. Now start the engine and allow it to
run until it stalls.
4 Disable the ignition system by
disconnecting the multi-plug from the DIS or
E-DIS ignition coil. Remove all the spark plugs
with reference to Chapter 1 if necessary.
5 Fit a compression tester to the No 1
cylinder spark plug hole - the type of tester
which screws into the plug thread is to be
preferred.
6 Arrange for an assistant to hold the
accelerator pedal fully depressed to the floor,
while at the same time cranking the engine
over for several seconds on the starter motor.
Observe the compression gauge reading. The
compression will build up fairly quickly in a
healthy engine. Low compression on the first
stroke, followed by gradually-increasing
pressure on successive strokes, indicates
worn piston rings. A low compression on the
first stroke which does not rise on successive
strokes, indicates leaking valves or a blown
head gasket (a cracked cylinder head could
also be the cause). Deposits on the underside
of the valve heads can also cause low
compression. Record the highest gauge
reading obtained, then repeat the procedure
for the remaining cylinders.
7 Due to the variety of testers available, and
the fluctuation in starter motor speed when
cranking the engine, different readings
are often obtained when carrying out
the compression test. For this reason, actual
compression pressure figures are not quoted
by Ford. However, the most important factor
is that the compression pressures are uniform
in all cylinders, and that is what this test is
mainly concerned with.
8 Add some engine oil (about three squirts
from a plunger type oil can) to each cylinder
through the spark plug holes, and then repeat
the test. 9
If the compression increases after the oil is
added, it is indicative that the piston rings are
definitely worn. If the compression does not
increase significantly, the leakage is occurring
at the valves or the head gasket. Leakage
past the valves may be caused by burned
valve seats and/or faces, or warped, cracked
or bent valves.
10 If two adjacent cylinders have equally low
compressions, it is most likely that the head
gasket has blown between them. The
appearance of coolant in the combustion
chambers or on the engine oil dipstick would
verify this condition.
11 If one cylinder is about 20 percent lower
than the other, and the engine has a slightly
rough idle, a worn lobe on the camshaft could
be the cause.
12 On completion of the checks, refit the
spark plugs and reconnect the HT leads and
the ignition coil plug. Refit the fuel pump fuse
to the fusebox.
3 Top Dead Centre (TDC) for No 1 piston - locating
2
1Top dead centre (TDC) is the highest point
of the cylinder that each piston reaches as the
crankshaft turns. Each piston reaches its TDC
position at the end of its compression stroke,
and then again at the end of its exhaust
stroke. For the purpose of engine timing, TDC
at the end of the compression stroke for No 1
piston is used. On the HCS engine, No 1
cylinder is at the crankshaft pulley/timing
chain end of the engine. Proceed as follows.
2 Ensure that the ignition is switched off.
Disconnect the HT leads from the spark plugs,
then unscrew and remove the plugs as
described in Chapter 1.
3 Turn the engine over by hand (using a
spanner on the crankshaft pulley) to the point
where the timing mark on the crankshaft
pulley aligns with the TDC (0) mark or TDC
reference pointer on the timing cover (see
illustration) . As the pulley mark nears the
timing mark, the No 1 piston is simultaneously
approaching the top of its cylinder. To ensure
that it is on its compression stroke, place a
finger over the No 1 cylinder plug hole, and feel to ensure that air pressure exits from the
cylinder as the piston reaches the top of its
stroke.
4
A further check to ensure that the piston is
on its compression stroke can be made by
first removing the air cleaner (refer to the
relevant Part of Chapter 4), then unbolting and
removing the rocker cover, so that the
movement of the valves and rockers can be
observed.
5 With the TDC timing marks on the
crankshaft pulley and timing cover in
alignment, rock the crankshaft back and forth
a few degrees each side of this position, and
observe the action of the valves and rockers
for No 1 cylinder. When No 1 piston is at the
TDC firing position, the inlet and exhaust valve
of No 1 cylinder will be fully closed, but the
corresponding valves of No 4 cylinder will be
seen to rock open and closed.
6 If the inlet and exhaust valves of No 1
cylinder are seen to rock whilst those of
No 4 cylinder are shut, the crankshaft will
need to be turned one full rotation to bring
No 1 piston up to the top of its cylinder on the
compression stroke.
7 Once No 1 cylinder has been positioned at
TDC on the compression stroke, TDC for any
of the other cylinders can then be located by
rotating the crankshaft clockwise (in its
normal direction of rotation), 180º at a time,
and following the firing order (see
Specifications).
4 Cylinder head rocker cover -
removal and refitting
1
Removal
1 Where necessary for access, remove the air
cleaner as described in the relevant Part of
Chapter 4.
2 Detach the HT leads from the spark plugs.
Pull on the connector of each lead (not the
lead itself), and note the order of fitting.
3 Remove the engine oil filler cap and
breather hose (where fitted).
4 Unscrew the four retaining bolts, and lift the
rocker cover clear of the cylinder head.
Remove the gasket.
HCS engine in-car repair procedures 2A•3
3.3 Timing mark on the crankshaft pulley aligned with the TDC (0) mar\
k on the timing cover
2A
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1 General information
How to use this Chapter
This Part of Chapter 2 is devoted to repair
procedures possible while the engine is still
installed in the vehicle, and includes only the
Specifications relevant to those procedures.
Similar information concerning the 1.3 litre
HCS engine, and the 1.6 and 1.8 litre Zetec
engines, will be found in Parts A and C of this
Chapter respectively. Since these procedures
are based on the assumption that the engine
is installed in the vehicle, if the engine has
been removed from the vehicle and mounted
on a stand, some of the preliminary
dismantling steps outlined will not apply.
Information concerning engine/transmission
removal and refitting, and engine overhaul, can
be found in Part D of this Chapter, which also
includes the Specifications relevant to those
procedures.
Engine description
The engine is a four-cylinder, in-line
overhead camshaft type, designated CVH
(Compound Valve angle, Hemispherical
combustion chamber) or PTE (Pent roof, high
Torque, low Emission). The PTE engine was
introduced for 1994 and, apart from
modifications to the cylinder head, camshaft
and intake system, is virtually identical to the
CVH engine it replaces. The engine is
mounted transversely at the front of the
vehicle together with the transmission to form
a combined power unit. The crankshaft is supported in five split-
shell type main bearings within the cast-iron
crankcase. The connecting rod big-end
bearings are split-shell type, and the pistons
are attached by interference-fit gudgeon pins.
Each piston has two compression rings and
one oil control ring.
The cylinder head is of light alloy
construction, and supports the camshaft in five
bearings. Camshaft drive is by a toothed
composite rubber timing belt, which is driven by
a sprocket on the front end of the crankshaft.
The timing belt also drives the water pump,
which is mounted below the cylinder head. Hydraulic cam followers (tappets) operate the
rocker arms and valves. The tappets are
operated by pressurised engine oil. When a
valve closes, the oil passes through a port in the
body of the cam follower, through four grooves
in the plunger and into the cylinder feed
chamber. From the chamber, the oil flows to a
ball-type non-return valve and into the pressure
chamber. The tension of the coil spring causes
the plunger to press against the valve, and so
eliminates any free play. As the cam lifts the
follower, the oil pressure in the pressure
chamber is increased, and the non-return valve
closes off the port feed chamber. This in turn
provides a rigid link between the cam follower,
the cylinder and the plunger. These then rise as a unit to open the valve. The cam follower-to-
cylinder clearance allows the specified quantity
of oil to pass from the pressure chamber, oil only
being allowed past the cylinder bore when the
pressure is high during the moment of the valve
opening. When the valve closes, the escape of
oil will produce a small clearance, and no
pressure will exist in the pressure chamber. The
feed chamber oil then flows through the non-
return valve and into the pressure chamber, so
that the cam follower cylinder can be raised by
the pressure of the coil spring, eliminating free
play until the valve is operated again.
As wear occurs between the rocker arm
and the valve stem, the quantity of oil that
flows into the pressure chamber will be
slightly more than the quantity lost during the
expansion cycle of the cam follower.
Conversely, when the cam follower is
compressed by the expansion of the valve, a
slightly smaller quantity of oil will flow into the
pressure chamber than was lost. A rotor-type oil pump is mounted on the
timing cover end of the engine, and is driven
by a gear on the front end of the crankshaft. A
full-flow type oil filter is fitted, and is mounted
on the side of the crankcase.
Repair operations possible with
the engine in the car
The following work can be carried out with
the engine in the car:
a) Compression pressure - testing.
b) Rocker cover - removal and refitting.
c) Timing belt - removal, refitting and
adjustment.
d) Camshaft oil seal - renewal.
e) Camshaft - removal and refitting.
f) Cylinder head - removal and refitting.
g) Cylinder head and pistons - decarbonising.
h) Crankshaft pulley - removal and refitting.
i) Crankshaft oil seals - renewal.
j) Oil filter renewal.
k) Sump - removal and refitting.
l) Flywheel - removal, inspection and refitting.
m) Mountings - removal and refitting.
Note: It is possible to remove the pistons and
connecting rods (after removing the cylinder
head and sump) without removing the engine.
However, this is not recommended. Work of
this nature is more easily and thoroughly
completed with the engine on the bench, as
described in Chapter 2D.
2 Compression test -
description and interpretation
2
Refer to Section 2 in Part A of this Chap-
ter.
3 Top Dead Centre (TDC) for
No 1 piston - locating
2
1Top dead centre (TDC) is the highest point
of the cylinder that each piston reaches as the
crankshaft turns. Each piston reaches its TDC
position at the end of its compression stroke,
and then again at the end of its exhaust
stroke. For the purpose of engine timing, TDC
on the compression stroke for No 1 piston is
used. No 1 cylinder is at the timing belt end of
the engine. Proceed as follows.
2 Remove the upper timing belt cover as
described in Section 7.
3 Chock the rear wheels then jack up the
front of the car and support it on axle stands
(see “Jacking and Vehicle Support” ).
4 Undo the retaining bolts, and remove the
cover from the underside of the crankshaft
pulley.
5 Fit a spanner onto the crankshaft pulley bolt,
and turn the crankshaft in its normal direction
of rotation (clockwise, viewed from the pulley
end) to the point where the crankshaft pulley
timing notch is aligned with the TDC (0) timing
mark on the timing belt cover.
6 Although the crankshaft is now in top dead
centre alignment, with piston Nos 1 and 4 at
the top of their stroke, the No 1 piston may
not be on its compression stroke. To confirm
that it is, check that the timing pointer on the
camshaft sprocket is exactly aligned with the
TDC mark on the front face of the cylinder
head (see illustrations) . If the pointer is not
aligned, turn the crankshaft pulley one further
CVH and PTE engine in-car repair procedures 2B•3
3.6b Camshaft sprocket timing mark
aligned with the TDC mark on the front
face of the cylinder head3.6a Crankshaft pulley notch (arrowed)aligned with the TDC (0) mark on the
timing belt cover
2B
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Turning the engine will be
easier if the spark plugs are
removed first - see Chapter 1.
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complete turn, and all the markings should
now align.
7With the engine set at No 1 piston on TDC
compression, refit the crankshaft pulley cover,
lower the vehicle and refit the upper timing
belt cover.
4 Cylinder head rocker cover -
removal and refitting
2
Removal
1 Disconnect the battery negative (earth) lead
(refer to Chapter 5A, Section 1).
2 Remove the air cleaner assembly and air
inlet components as necessary for access as
described in the relevant Part of Chapter 4.
Disconnect the crankcase ventilation hose
from the rocker cover.
3 Remove the timing belt upper cover as
described in Section 7.
4 Referring to the relevant Part of Chapter 4
for details, disconnect the accelerator cable
from the throttle linkage and from the adjuster
bracket above the rocker cover. Position the
cable out of the way.
5 Where applicable, disconnect the choke
cable from the carburettor, referring to
Chapter 4A for details.
6 Unscrew and remove the rocker cover
retaining bolts and washers, then lift the cover
from the cylinder head. Note that a new
rocker cover gasket will be needed on
refitting.
Refitting
7 Before refitting the rocker cover, clean the
mating surfaces of both the cylinder head and
the cover.
8 Locate the new gasket in position, then fit
the cover retaining bolts and washers. Ensure
that the grooves in the plate washers are
facing upwards as they are fitted (see
illustrations) . Tighten the cover retaining
bolts to the specified torque wrench setting.
Refer to Chapter 4 for details on reconnecting
the accelerator cable, choke cable, air inlet
components and air cleaner (as applicable).
9 Refit the timing belt cover and reconnect
the battery earth lead.
5 Valve clearances -
general information
It is necessary for a clearance to exist
between the tip of each valve stem and the
valve operating mechanism, to allow for the
expansion of the various components as the
engine reaches normal operating
temperature. On most older engine designs, this meant
that the valve clearances (also known as
“tappet” clearances) had to be checked and
adjusted regularly. If the clearances were
allowed to be too slack, the engine would be
very noisy, its power output would suffer, and
its fuel consumption would increase. If the
clearances were allowed to be too tight, the
engine’s power output would be reduced, and
the valves and their seats could be severely
damaged. These engines employ hydraulic tappets
which use the lubricating system’s oil
pressure to automatically take up the
clearance between each camshaft lobe and
its respective valve stem. Therefore, there is
no need for regular checking and adjustment
of the valve clearances. However, it is
essential that only good-quality oil of the
recommended viscosity and specification is
used in the engine, and that this oil is always
changed at the recommended intervals. If this
advice is not followed, the oilways and
tappets may become clogged with particles of
dirt, or deposits of burnt (inferior) engine oil,
so that the system cannot work properly;
ultimately, one or more of the tappets may fail,
and expensive repairs may be required. On starting the engine from cold, there will
be a slight delay while full oil pressure builds
up in all parts of the engine, especially in the
tappets; the valve components, therefore,
may well “rattle” for about 10 seconds or so,
and then quieten. This is a normal state of
affairs, and is nothing to worry about,
provided that all tappets quieten quickly and
stay quiet. After the vehicle has been standing for
several days, the valve components may
“rattle” for longer than usual, as nearly all the oil will have drained away from the engine’s
top-end components and bearing surfaces.
While this is only to be expected, care must
be taken not to damage the engine under
these circumstances - avoid high-speed
running until all the tappets are refilled with oil
and operating normally. With the vehicle
stationary, hold the engine at no more than a
fast idle speed (maximum 2000 to 2500 rpm)
for 10 to 15 minutes, or until the noise ceases.
Do not run the engine at more than 3000 rpm
until the tappets are fully charged with oil and
the noise has ceased.
If the valve components are thought to be
noisy, or if a light rattle persists from the top
end after the engine has warmed up to normal
operating temperature, take the vehicle to a
Ford dealer for expert advice. Depending on
the mileage covered and the usage to which
each vehicle has been put, some vehicles may
be noisier than others; only a good mechanic
experienced in these engines can tell if the
noise level is typical for the vehicle’s mileage,
or if a genuine fault exists. If any tappet’s
operation is faulty, it must be renewed
(Section 11).
6 Crankshaft pulley -
removal and refitting
2
Removal
1 Disconnect the battery negative (earth) lead
(refer to Chapter 5A, Section 1).
2 Chock the rear wheels then jack up the
front of the car and support it on axle stands
(see “Jacking and Vehicle Support” ).
3 Unbolt and remove the cover from the
underside of the crankshaft pulley.
4 Remove the auxiliary drivebelt as described
in Chapter 1.
5 If timing belt renewal is also intended, set
the engine at TDC as described in Section 3
before removing the crankshaft pulley and
retaining bolt.
6 To prevent the crankshaft from turning as
the pulley bolt is loosened off, remove the
starter motor as described in Chapter 5A, and
then lock the starter ring gear using a suitable
lever (see illustration) .
2B•4 CVH and PTE engine in-car repair procedures
6.6 Using a suitable bar to lock the
flywheel ring gear4.8b Rocker cover retaining bolts and plate washers4.8a Fitting a new gasket to the rocker cover
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9Align the pump gear flats with those on the
crankshaft, then fit the oil pump. Check that
the sump mating faces of the oil pump and
the base of the crankcase are flush each side,
then tighten the retaining bolts to the
specified torque setting. Remove the
protective guide (see illustrations) .
10 Refit the oil pick-up tube to the oil pump,
using a new gasket and tighten to the
specified torque.
11 Slide the thrustwasher onto the front end
of the crankshaft, then insert the Woodruff key
into position in the groove in the crankshaft.
The key must be located with its flat edge
parallel with the line of the crankshaft, to
ensure that the crankshaft sprocket slides
fully into position as it is being refitted.
12 Refit the sump, crankshaft sprocket, the
timing belt, timing belt cover and drivebelt
pulley (as described in the appropriate earlier
Sections of this Chapter). Refit and adjust the
drivebelt as described in Chapter 1.
13 On completion, lower the vehicle and
reconnect the battery negative terminal.
15 Oil pump - dismantling,
inspection and reassembly
3
Dismantling
1 The oil pump fitted is a low-friction rotor-
type, driven from the front end of the
crankshaft. Where a high-mileage engine is being reconditioned, it is recommended that a
new oil pump is fitted.
2
To inspect the rotor assembly, first remove
the pump from the engine (Section 14), then
undo the retaining screws and remove the
cover plate (see illustration) . Remove the O-
ring seal.
Inspection
3 Clean the rotors and the inside of the pump
housing, then visually inspect the various
components for signs of excessive wear and
scoring. Check the pump components for
wear using feeler gauges in the same manner
as that described in Part A of this Chapter,
Section 13. Refer to the Specifications at the
start of this Chapter for specific details.
Reassembly
4 When reassembling the pump, ensure that
the inner (driving) and outer (driven) rotors are
located with the corresponding indented
matchmarks facing the same way (see
illustration) .
16Crankshaft oil seals -
renewal
4
Front oil seal
1 Disconnect the battery negative (earth) lead
(refer to Chapter 5A, Section 1).
2 Chock the rear wheels then jack up the front of the car and support it on axle stands
(see
“Jacking and Vehicle Support” ).
3 Remove the auxiliary drivebelt as described
in Chapter 1.
4 Remove the crankshaft pulley (Section 6),
the timing belt covers (Section 7), the timing
belt (Section 8) and crankshaft sprocket,
Woodruff key and thrustwasher (Section 9).
5 The oil seal is now accessible for removal
from the front face of the oil pump housing
(see illustration) . To withdraw the seal, a
hooked tool will be required; if available, use
Ford special tool No 21-096. Take care not to
damage the oil pump housing during removal.
As it is removed, note the fitted orientation of
the seal in its housing.
6 Clean the oil pump housing and the
crankshaft stub, then lubricate the lips of the
new seal and the crankshaft front stub with
clean engine oil.
7 The oil seal should be drawn into position
using the Ford special tool No 21-093A.
Failing this, use a tube of suitable diameter,
with the crankshaft pulley bolt and washers.
Do not hammer the seal into position. To
protect the seal lips as it is fitted onto the
crankshaft, cut a thin sheet of plastic to suit
and furl it round the front of the crankshaft,
over the journal shoulder.
8 When the seal is fully fitted, remove the
special tool (or fabricated tool) and withdraw
the plastic protector. Check that the
crankshaft is still at the TDC position and refit
the Woodruff key, thrustwasher and sprocket.
Refit and tension the timing belt, then refit the
timing belt cover and crankshaft pulley as
described in the appropriate Sections earlier
in this Chapter.
9 Refit and adjust the auxiliary drivebelt as
described in Chapter 1.
10 On completion, lower the vehicle and
reconnect the battery.
Rear oil seal
11 With the engine or transmission removed
from the vehicle for access, remove the clutch
as described in Chapter 6.
12 Remove the flywheel/driveplate as
described in Section 18.
13 If available, use Ford tool No 21-151 or a
suitable clawed tool to extract the seal from
2B•12 CVH and PTE engine in-car repair procedures
16.5 Crankshaft front oil seal - seen from
below (arrowed)15.4 Inner and outer rotor matchmarks (arrowed)15.2 Oil pump cover plate retainingscrews (arrowed)
14.9b With the oil pump refitted, removethe protective guide (arrowed)14.9a Refit the oil pump
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