1985 FORD GRANADA service

4Slacken the crankshaft pulley bolt. Prevent
the crankshaft from turning by engaging top
gear (manual gearbox only) and having an
assistant press the brake pedal hard, or by
removing the starter motor and jamming the
ring gear teeth with a lever.
5Unscrew the bolt part way, and use a
suitable legged-puller to draw the crankshaft
pulley off the crankshaft. The legs of the puller
must be suitably shaped to enable them to
rest on the metal surfaces of the pulley.Note:
Do not attempt to remove the pulley with a
puller whose legs contact the rubber surface
of the pulley(see illustrations). Note that a
new crankshaft pulley retaining bolt will be
required for refitting.
6Loosen the alternator lower mountingthrough-bolt, then remove the alternator upper
mounting bolt, and swing the alternator away
from the engine.
7Unscrew the central securing bolt, and
withdraw the drivebelt tensioner assembly.
8Unscrew the eleven securing bolts, and
remove the lower timing chain cover. Remove
the rubber gasket and discard it; a new one
must be used on refitting.
9Using a suitable Torx socket, unscrew the
securing screw, and carefully withdraw the oil
pump chain tensioner (see illustration).
10Unscrew the Torx type securing bolt, and
withdraw the oil pump sprocket, complete
with the oil pump drive chain.
11Unscrew the two Torx bolts securing the
lower timing chain guide, noting theirlocations, and withdraw the timing chain guide
through the top of the timing case (see
illustrations).
12Remove the Woodruff key from the end of
the crankshaft, prising it free with a
screwdriver if necessary, then slide the double
chain sprocket from the end of the crankshaft,
and lift the chain from the sprocket(see
illustration).
13Withdraw the timing chain through the top
of the timing case and, where applicable,
remove the cable-tie from the chain (see
illustration).
14The timing chain, sprockets and tensioner
can now be examined for wear and damage.
15Commence refitting as follows. Note that
coppered links are provided in the timing
chain to assist with refitting, but these can be
difficult to see on a chain which has already
been in service. If possible, position the
coppered links as described during the
following procedure. If the coppered links are
not visible, the chain should still be refitted as
described, but ignore the references to the
coppered links.
16Make sure that the slot for the Woodruff
key in the end of the crankshaft is pointing
vertically downwards. If necessary,
temporarily refit the crankshaft pulley bolt in
order to turn the crankshaft to the required
position.
17Lower the timing chain into the timing
case from above, with the single coppered link
at the bottom. If desired, use a cable-tie to
DOHCengine 2B•9
2B
15.5a Using a puller to remove the
crankshaft pulley (viewed from underneath
vehicle)15.5b Position the legs of the puller on the
metal surfaces of the pulley (A), not the
rubber surface (B)15.9 Oil pump chain tensioner securing
screw (arrowed)
15.12 Sliding the double chain sprocket
from the end of the crankshaft
15.11a Lower timing chain guide upper
securing bolt (arrowed)
15.13 Withdrawing the timing chain through
the top of the timing case
15.11b Lower timing chain guide lower
securing bolt (arrowed)
15.11c Withdrawing the lower timing chain
guide
procarmanuals.com

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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2C•2V6 engines
Oil pump
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Bi-rotor
Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .From camshaft
Operating clearances:
Outer rotor-to-housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.15 to 0.30 mm
Inner-to-outer rotor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.05 to 0.20 mm
Rotor endfloat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.03 to 0.10 mm
Cylinder block
Cast identification mark . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E
Bore diameter:
Standard grade 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93.010 to 93.020 mm
Standard grade 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93.020 to 93.030 mm
Standard grade 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93.030 to 93.040 mm
Standard grade 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93.040 to 93.050 mm
Oversize grade A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93.520 to 93.530 mm
Oversize grade B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93.530 to 93.540 mm
Oversize grade C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93.540 to 93.550 mm
Standard service grade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93.040 to 93.050 mm
Oversize 0.5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93.540 to 93.550 mm
Oversize 1.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94.040 to 94.050 mm
Main bearing parent bore:
Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60.620 to 60.640 mm
Oversize . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61.000 to 61.020 mm
Camshaft bearing bore (without bushes):
Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47.025 to 47.060 mm
Front centre . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46.645 to 46.680 mm
Rear centre . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46.265 to 46.300 mm
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45.885 to 45.920 mm
Crankshaft
Number of main bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Main bearing journal diameter (standard) . . . . . . . . . . . . . . . . . . . . . . . .56.980 to 57.000 mm
Main bearing running clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.008 to 0.062 mm
No 3 (thrust) bearing shoulder width (standard) . . . . . . . . . . . . . . . . . . .26.390 to 26.440 mm
No 3 (thrust) flanged bearing shell width (standard) . . . . . . . . . . . . . . . .26.240 to 26.290 mm
Crankshaft endfloat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.08 to 0.20 mm
Big-end bearing journal diameter (standard) . . . . . . . . . . . . . . . . . . . . .53.980 to 54.000 mm
Big-end bearing running clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.006 to0.064 mm
Pistons
Diameter:
Standard grade 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92.972 to 92.982 mm
Standard grade 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92.982 to 92.992 mm
Standard grade 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92.992 to 93.002 mm
Standard grade 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93.002 to 93.012 mm
Service standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93.000 to 93.020 mm
Oversize 0.5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93.500 to 93.520 mm)
Oversize 1.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94.000 to 94.020 mm
Clearance in bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.020 to 0.050 mm
Piston ring end gaps:
Top and centre . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.38 to 0.58 mm
Bottom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.40 to 1.40 mm
Gudgeon pins
Diameter:
Red . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23.994 to 23.997 mm
Blue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23.997 to 24.000 mm
Clearance in piston . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.008 to 0.014 mm
Interference in connecting rod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.018 to 0.042 mm
Connecting rods
Big-end parent bore diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56.820 to 56.840 mm
Small-end bush internal diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23.958 to 23.976 mm
Cylinder heads
Cast identification mark . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .EN
Valve seat angle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44°30’ to 45°00’
Valve seat width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.61 to 2.33 mm
Valve guide bore:
Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8.063 to 8.088 mm
Oversizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+0.2, 0.4, 0.6 and 0.8 mm
procarmanuals.com

2C•4V6 engines
Torque wrench settings (continued)Nmlbf ft
Timing cover to intermediate plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 to 1710 to 13
Intermediate plate to cylinder block . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 to 2113 to 16
Oil pump to cylinder block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 to 1710 to 13
Oil pump cover bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 to 137 to 10
Rocker shaft securing bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62 to 7046 to 52
Sump bolts:
Stage 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 to 73 to 5
Stage 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 to 105 to 7
Sump drain plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 to 2816 to 21
Oil pressure switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 to 159 to 11
Oil cooler threaded sleeve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 to 4015 to 30
Cylinder head hexagon bolts:
Stage 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40 to 4530 to 33
Stage 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55 to 7041 to 52
Stage 3 (after 10 to 20 minutes) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95 to 11570 to 85
Stage 4 (after warm-up) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95 to 11570 to 85
Cylinder head - Torx bolts:
Stage 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35 to 4026 to 30
Stage 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70 to 7552 to 55
Stage 3 (after 5 minutes) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Tighten further 90°Tighten further 90°
Rocker cover bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 to 84 to 6
Fuel pump blanking plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 to 1812 to 13
Flywheel bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64 to 7047 to 52
Bellhousing-to-engine bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 to 3020 to 22
2.4 litre engine
Note: Unless otherwise stated, the specifications and torque wrench settings for the 2.4 litre engine are as given for the 2.8 litre engine.
General
Manufacturer’s code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ARC
Bore - mm (in) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84.0 (3.307)
Stroke - mm (in) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72.0 (2.865)
Cubic capacity - cc (cu in) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2394 (146.1)
Compression ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9.5:1
Maximum power (DIN, kW @ rpm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96 @ 5800
Maximum torque (DIN, Nm @ rpm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .193 @ 3000
Cylinder block
Identification mark . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D
Bore diameter:
Standard grade 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84.000 to 84.010 mm
Standard grade 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84.010 to 84.020 mm
Standard grade 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84.020 to 84.030 mm
Standard grade 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84.030 to 84.040 mm
Oversize grade A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84.510 to 84.520 mm
Oversize grade B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84.520 to 84.530 mm
Oversize grade C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84.530 to 84.540 mm
Standard service grade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84.030 to 84.040 mm
Oversize 0.5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84.530 to 84.540 mm
Oversize 1.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85.030 to 85.040 mm
Pistons
Diameter:
Standard grade 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83.962 to 83.972 mm
Standard grade 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83.972 to 83.982 mm
Standard grade 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83.982 to 83.992 mm
Standard grade 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83.992 to 84.002 mm
Standard service grade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83.978 to 84.002 mm
Oversize 0.5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84.478 to 84.502 mm
Oversize 1.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84.978 to 85.002 mm
Clearance in bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.028 to 0.048 mm
Piston ring end gap:
Top and centre . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.30 to 0.50 mm
Bottom (oil control) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.40 to 1.40 mm
Cylinder head
Identification mark . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .H
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27The inlet manifold bolts should be
retightened to the specified torque in the correct
sequence. This will mean disconnecting the air
hoses from the throttle valve housing, the
vacuum hose from the left-hand rocker cover,
and the wiring connector from the idle speed
control valve and throttle valve potentiometer.
Remove the plenum chamber, place it to one
side, then release the fuel rail bolts but do not
disconnect the fuel pipes. It may also be
necessary to remove the distributor again to
gain access to one of the bolts.
See Chapter 1, Section 23.
1Refer to Section 7 and refit the items listed.
2If the oil cooler and its threaded bush were
removed, refit them as follows (see
illustration).
3Screw the new bush into the cylinder block.
Apply Omnifit Activator “Rapid” (to Ford
specification SSM-99B-9000-AA) to the
exposed threads of the bush and to the inside
of the threaded sleeve.
4Apply one drop of Omnifit Sealant “300
Rapid” (to Ford specification SSM-4G-9003-
AA) to the leading threads of the bush.Do not
use more than one drop, otherwise sealant
may get into the lubrication circuit.
5Fit the cooler, using a new gasket, and
secure with the threaded bush. Make sure that
the coolant pipes are positioned at the correct
angle (see illustration),then tighten the
threaded sleeve to the specified torque.
6Fit a new oil filter element, oiling its sealing
ring prior to installation. Tighten the filter
approximately three-quarters of a turn beyond
the point where the seal contacts the cooler
face. Do not use any tool to tighten the filter.
Refer to Part A, Section 49, paragraphs 1 to
9 of this Chapter. Before starting the engine,
refer to the following Section.1Refer to Part A, Section 51 of this Chapter.
2When conventional (hexagon-headed)
cylinder head bolts are fitted, they must be re-
tightened after the engine has warmed up.
Proceed as follows.
3Stop the engine and remove the rocker covers.
4Working in the sequence used for
tightening, slacken one cylinder head bolt a
quarter turn, then re-tighten it to the Stage 4
specified torque. Repeat in sequence for all
the cylinder head bolts.
5Tighten the inlet manifold bolts.
6Check the valve clearances.
7Refit the rocker covers and other disturbed
components.
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.
43Compression test -
description and interpretation
42Initial start-up after overhaul
or major repair
41Engine - refitting
40Ancillary components - refitting
39Valve clearances - checking
and adjustment
V6 engines 2C•21
2C
40.2 Oil cooler components
A Threaded bush
B Seal
C CoolerD Sleeve
E Oil filter
40.5 Oil cooler installation angle
A Rear face of cylinder block
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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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2Disconnect the battery negative lead.
3Drain the cooling system (Chapter 3). Save
the coolant if it is fit for re-use.
4Disconnect the multi-plug from the sensor.
Pull on the plug, not on the wiring (see
illustration).
5Unscrew the sensor and remove it.
6Refit by reversing the removal operations.
Refill the cooling system.
Note: The manifold heater must not be
removed while it is hot.
1Disconnect the battery negative lead. 2Remove the air cleaner to improve access.
3Remove the three bolts which secure the
heater to the underside of the manifold.
4Disconnect the electrical feed from the heater.
5Remove the heater. Recover the gasket and
O-ring (see illustration).
6Use a new gasket and O-ring when refitting.
Offer the heater to the manifold, insert the
three bolts and tighten them evenly, making
sure that the heater does not tip or jam.
7Reconnect the electrical feed.
8Refit the air cleaner and reconnect the
battery.
All relays are located behind the facia panel.
Access is gained by removing the facia top
(see illustration).
Testing of a suspect relay is by substitution
of a known good unit.
1All models have a facility for retarding the
ignition timing by up to six degrees without
physically disturbing the distributor. The
adjustment is intended for use when the
correct grade of fuel is not available.
2Adjustment is made by earthing one or two
leads (sometimes called “octane adjustment”
leads) which terminate in a multi-plug next to
the ignition coil (see illustrations). Ideally a
service adjustment lead, available from a Ford
dealer, should be used. Cut and insulate the
wires in the adjustment lead which are not to
be earthed.
3The amount of ignition retardation is as
follows:
Wire(s) Degrees retard
earthed Carb. injection V6
Blue 2 4 6
Red 4 2 3
Blue and red 6 6 Forbidden
4Performance and efficiency will suffer as a
result of this adjustment. Normal timing should
be restored (by isolating the adjustment leads)
when the correct grade of fuel is available.
5If the yellow adjustment lead is earthed, thiswill raise the idle speed by 75 rpm (OHC) or 50
rpm (V6). It may be found that the yellow lead
has already been earthed in production, in
which case disconnecting it will lower the idle
speed by the same amount. This adjustment
does not apply to 1.8 litre carburettor models.
1.8 models from January 1987
6The effect of the “octane adjustment” leads
on these models fitted with the ESC Hybrid
Module is as follows.
Red lead earthed2°retarded
Blue lead earthed4°retarded
Red and blue leads earthed6°retarded
1Fitted to DOHC engines,the sensor is
located at the right-hand rear of the cylinder
block, behind the oil filter (see illustration).
2To remove the sensor, first disconnect the
battery negative lead.
3Access is most easily obtained from
underneath the vehicle. To improve access,
apply the handbrake, then jack up the front of
the vehicle and support it securely on axle
stands (see “Jacking”).
4Disconnect the wiring plug from the sensor.
5Remove the securing screw and withdraw the
sensor from the location in the cylinder block.
6Refitting is a reversal of removal, using a
new sensor O-ring and tightening the retaining
screw to the specified torque setting.
24Crankshaft speed/position
sensor - removal and refitting
23Ignition timing and idle speed
adjustments
22Engine management system
relays - testing
21Manifold heater (carburettor
models) - removal and refitting
Engine electrical systems 5•11
5
20.4 Coolant temperature sensor multi-plug21.5 Removing the manifold heater22.1 Engine management system relays
A Power holdB Manifold heater
23.2a Octane adjustment lead multi-plug
23.2b Service adjustment lead for timing
and idle adjustment
A Earthing point (coil
screw)
B Multi-plugC Cut wires not to be
earthed
24.1 Crankshaft speed/position sensor
(viewed from underneath)
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