Page 589 of 1226
Engine - 1.25L Duratec-1 6V (Sigma)ll.4L
303-01A-I13 Duratec-1 6V (Sigma)/l .6L Duratec-1 6V (Sigma)
303-01 A-I 13
ASSEMBLY
24n ACAUTION:T~~ thickness of the new 25.
Install the intake manifold lower retaining
, cylinder head gasket must be the same as bolt.
I , that
of the old one (hole marked).
N0TE:lnstall a new cylinder head gasket.
N0TE:Position the cylinder head onto the two
guide sleeves.
Using the special tool, install the cylinder
head.
Tighten the cylinder head bolts in the
sequence shown in three stages.
Stage 1: 15 Nm.
Stage2: 30 Nm.
Stage 3: 90 degrees.
26. Attach the oil level indicator tube to the
intake manifold.
Attach the KS electrical connector to the oil
level indicator tube.
27. Connect the PCV hose to the PCV cover.
28. N0TE:ldentification numbers are provided
on the outer face of the camshaft bearing
caps.
2006.0 Fiesta 1212006 GI 54225en
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Page 594 of 1226

Engine - 1.25L Duratec-I 6V (Sigma)ll.4L
303-01 A-1 18 Duratec-1 6V (Sigma)ll .6L Duratec-1 6V (Sigma) 303-01 A-I 18
ASSEMBLY
Carefully turn the crankshaft against the
special tool.
55. Check the valve timing.
If necessary loosen the camshaft pulleys and
correct the camshaft alignment.
56. Remove the special tools.
57. Install the blanking plug.
58. Check the valve clearances, adjust if
necessary.
f:
For additional information, refer to: Valve (.
Clearance Adjustment (303-01 Engine -
1.25L Duratec-1 6V (Sigma)ll.4L
Duratec-1 6V (Sigma)ll .6L Duratec-1 6V
(Sigma), General Procedures).
59. Using the
special tool, install the spark
plugs.
Apply grease to the spark plug threads.
60. N0TE:lnstall the stud bolts to positions 5
and 6.
Install the valve cover. (
Tighten the bolts in the sequence shown in
three stages.
Stage I : Tighten bolt 1 by 3 to 4 turns.
Stage
2: Tighten bolts I through 13 to 3 Nm.
Stage
3: Tighten bolts 1 through 13 to 9 Nm.
'Irn CAUTION: Use a suitable blunt object
to avoid damage to the spark
plug
connector gasket. Coat the inside of the
spark
plug connector with silicone grease
to a depth of 5-10 mm. C
2006.0 Fiesta 1212006 GI 54225en
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Page 596 of 1226
Engine - 1.25L Duratec-1 6V (Sigma)llm4L
303-01 A-I 20 Duratec-1 6V (Sigma)/l .6L Duratec-1 6V (Sigma)
303-01 A-I 20
ASSEMBLY
65. Install the generator.
66. N0TE:lnstall a new oil filter.
Install the oil filter.
67. Install the engine wiring harness.
69. Remove the special tools.
70. N0TE:lnstall a new exhaust manifold gasket
and new exhaust manifold retaining nuts.
N0TE:Do not fully tighten the nuts and bolt at this
stage.
Install the exhaust manifold.
68. Using the special tool attach the engine to
an engine hoist.
71. Tighten the exhaust manifold upper
retaining nuts and bolt in the sequence
shown in two stages.
Stage
I: 20 Nm.
Stage 2: 55 Nm.
2006.0 Fiesta 1212006 GI 54225en
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Page 602 of 1226
303-01 A-I 26 Engine
- 1.25L Duratec-I 6V (Sigma)ll.4L
Duratec-1 6V (Sigma)ll .6L
Duratec-1 6V (Sigma) 303-01A-I26
INSTALLATION
23. Attach the air conditioning (NC)
compressor to the
cylinder block.
27. Connect the reversing lamp switch
electrical connector.
I
24. Connect the NC compressor clutch
28. Connect the crankshaft position (CKP)
electrical connector. sensor electrical connector.
25. Install the accessory drive belt. 29. Connect the oil pressure switch electrical
For
additional information, refer to: connector.
Accessory Drive
Belt - I .4L Duratec-16V
(Sigma)ll .6L Duratec-1 6V (Sigma),
Vehicles With: Air Conditioning (303-05
Accessory Drive,
Removal and
Installation).
26. Connect the starter motor electrical
connectors.
30.
N0TE:lnstall new exhaust flange nuts and
a new exhaust
flange gasket.
2006.0 Fiesta 1212006 Gll3164en
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Page 614 of 1226
Engine - 1.25L Duratec-1 6V (Sigma)ll.4L
Duratec-1 6V (Sigma)ll .6L Duratec-1 6V (Sigma)
303-01 A-1 38
INSTALLATION
21. Connect the power steering line to the 25. Connect the ignition switch to starter motor
steering pump.
solenoid and battery to starter motor
solenoid cables.
22. Attach the power steering line support
bracket to the engine block.
26. Connect the crankshaft position (CKP)
sensor electrical connector.
23. N0TE:lnstall new exhaust flange nuts and
a new exhaust flange gasket.
27. Connect the oil pressure switch electrical
Attach the exhaust flexible pipe to the connector.
catalytic converter.
24. Remove the exhaust flexible pipe support.
2006.0 Fiesta 1212006 G380459en
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Page 631 of 1226

303101 B-9 Engine - 2.OL Duratec-HE (M14) 303-01 B-9
DESCRIPTION AND OPERATION
The complete engine is made of cast aluminum
which, when combined with the plastic intake
manifold, gives a very light unit.
2.OL Duratec-HE (M14) engine
Emission standard
N0TE:Due to the fine tolerance in the bearing
clearances and bearing shells, no service
operations whatsoever are permitted on the crank
assembly. In the event of damage, the complete
cylinder block and crank assembly must be
changed. European
Emissions Standard Stage
IV (Stage II I, depending
on country)
Further design features include a ladder frame
incorporating the main bearing caps which support
the crankshaft in the cylinder block, and the
deep-drawn side walls of the cylinder block which
reduce engine vibration.
The camshafts are driven by a pinned link chain
which runs very quietly and is also
maintenance-free.
Cvlinder head
Item Description
1
2
The engine management for the 2.OL Duratec-HE
(M14) is provided by a Visteon system.
Item Description
Exhaust camshaft
Camshaft bearing cap
', This engine management systems controls the ' , sequential multipoint fuel injection (SFI) and the
I 1 (Enngine code I
3
4
wl~n~ine serial number I
Cam to identify cylinder No. 1
Intake camshaft
ele~tronically controlled coolant-cooled exhaust The design and the valve arrangement in the gas recirculation (EGR) valve.
cylinder head is similar to the head of the Zetec-SE
engines.
Enaine codes
5
The engine code and the engine serial number are
stamped on the right-hand side of the cylinder block
on the flywheel side of the engine. Camshaft sprockets
Cvlinder
head gasket
Item Description
I 1 I Cylinder head gasket I
1 2 1 Locating dowels 1
A four-layer laminated steel cylinder head gasket
is used.
The cylinder head gasket and cylinder head are
located with two locating dowels.
2006.0 Fiesta 1212006 G461395en
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Page 636 of 1226
303-01 B-I 4 Engine - 2.OL Duratec-HE (M14) 303-01 8-1 4
DESCRIPTION AND OPERATION
Oil filter adapter Engine oil cooler I I I
Item Descri tio on
I 1 I Oil cooler retaining bolt I
1 2 1 Oil cooler I
1 3 1 Oil filter I
1 4 1 Oil pressure switch I
1 5 1 Oil filter adapter retaining bolts I
1 6 1 Oil filter adapter gasket I
1 7 1 Oil filter adapter I
Item Description
1 3 ( Oil cooler O-ring seal 7
1
2
The oil filter adapter is mounted on the cylinder
block with a gasket. Oil cooler retaining bolt
Oil cooler
2006.0 Fiesta 1212006 G461395en
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Page 640 of 1226

303-01 B-I 8 Engine - 2.OL Duratec-HE (M14) 303-01 B-18
GENERAL PROCEDURES
3m &AUTION:O~I~ rotate the crankshaft in 19.
Apply a small bead of sealant to the areas
the normal direction of rotation. as
shown.
/ '
Rotate the crankshaft until each piston is at
TDC and measure the valve clearances.
14.
N0TE:Only carry out the following steps
when the valve
clearance(s) require
adjustment.
For additional information, refer to:
Specifications
(303-01 Engine - 2.OL
Duratec-HE (M14), Specifications).
Remove the camshafts.
For additional information, refer to:
Camshafts (303-01 Engine
- 2.OL
Duratec-HE (M14), In-vehicle Repair).
15.
N0TE:The number on the valve tappet is
the valve tappet thickness, however only
the decimal places are marked (for example
.650 = 3.650).
Determine the valve tappet thickness
required:
1. Remove the valve tappet and read the
thickness from the underside.
2. Valve tappet thickness required
= thickness
of currently installed valve tappet
+ the
measured valve clearance
- the required
valve clearance.
For additional information, refer to:
Specifications (303-01 Engine
- 2.OL
Duratec-HE (M14), Specifications).
3. Install the correct valve tappet.
16. N0TE:Do not install the valve cover at this
stage.
Install the camshafts.
For additional information, refer to:
Camshafts (303-01 Engine
- 2.OL
Duratec-HE (M14), ln-vehicle Repair).
17. ~CAUTION:O~I~ rotate the crankshaft in
the normal direction of rotation.
Rotate the crankshaft until each piston is at
TDC and measure the valve clearances.
18. Repeat this procedure as necessary until
all valve clearances are within the specified
tolerance. 20.
N0TE:lnstall a
new valve cover gasket if
necessary.
Install the valve cover.
Tighten the bolts in the sequence shown.
21. Using the special tool, install the spark
plugs.
2006.0 Fiesta 1212006 G451279en
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