Page 499 of 1226
Engine - 1.25L Dura
303-01 A-23 Duratec-1
6V (Sigma)ll .(
:ec-I 6V (Sigma)llm4L
L
Duratec-1 6V (Sigma)
303-01 Am23
IN-VEHICLE REPAIR
Discard the gaskets.
Installation
3. Attach the wiring harness and the coolant
hose to the intake manifold.
4. N0TE:lnstall new injector O-ring seals.
1. N0TE:lnstall new intake manifold gaskets. N0TE:Coat the 0-rina seals with clean enaine oil.
Install the intake manifold. V "
Install the fuel supply manifold.
2. Attach the wiring harness to the intake
manifold. 5. Connect the fuel return line quick release
coupling. For additional information, refer to
Section
31 0-00 [Fuel System - General
Information].
2006.0 Fiesta 1212006 GI 83728en
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Engine - 1.25L Duratec-1 6V (Sigma)llI4L
Duratec-1 6V (Sigma)/l .6L Duratec-1 6V (Sigma)
IN-VEHICLE REPAIR
6. Connect the fuel supply line quick release
coupling. For additional information, refer to
Section 310-00 [Fuel System
- General
Information].
7. Attach the fuel line to the intake manifold.
Install the cable tie. 8.
Connect the fuel injector electrical
connectors.
9. Connect the engine coolant temperature
(ECT) sensor electrical connector.
10. Attach the generator to the engine.
1. Install the stud and nut.
2006.0 Fiesta 1212006 GI 83728en
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Page 501 of 1226
Engine - 1.25L Duratec-1 6V (Sigma)ll.4L
Duratec-1 6V (Sigma)ll .6L Duratec-1 6V (Sigma)
IN-VEHICLE REPAIR
2. Install the bolts.
I I. Connect the generator electrical connector.
12. Connect the throttle plate control motor
(DC-ISC) electrical connector.
13. Connect the temperature and manifold
absolute pressure (T-MAP) sensor electrical
connector.
14. Attach the oil level indicator tube to the
intake manifold.
15. Connect the knock sensor (KS) electrical
connector.
2006.0 Fiesta 1212006 GI 83728en
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Page 502 of 1226
Engine - 1.25L Duratec-1 6V (Sigma)ll.4L
303-01 A-26 Duratec-1 6V (Sigma)Il.GL Duratec-1 6V (Sigma) 303-01 A-26
IN-VEHICLE REPAIR
16. Connect the evaporate emission (EVAP)
hose to the EVAP valve.
17. Connect the brake booster vacuum line to
the intake manifold.
19. Connect the engine wiring harness
electrical connector.
20. Install the intake manifold lower retaining
bolt and the generator bracket retaining
bolts.
18. Connect the positive crankcase ventilation
(PCV) hose to the PCV.
21. Install the accessory drive belt. For
additional information, refer to
Section
303-05 [Accessory Drive].
22. Attach the power steering fluid reservoir to
the bracket.
23. Install the air cleaner. For additional
information, refer to Section
3031 2 [Intake
Air Distribution and Filtering].
2006.0 Fiesta 1212006 GI 83728en
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Page 503 of 1226
Engine - 1.25L Duratec-1 6V (Sigma)ll.4L
303-01 A-27 Duratec-1 6V (Sigma)ll .6L Duratec-1 6V (Sigma)
303-01 A-27
IN-VEHICLE REPAIR
24. Connect the battery ground cable. For
additional information, refer to
I Section 414-01 [Battery, Mounting and
' Cables].
-
2006.0 Fiesta 1212006 GI 83728en
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Page 504 of 1226

Engine - I .25L Duratec-1 6V (Sigma)llm4L
303-01 A-28 Duratec-1 6V (Sigma)llm6L Duratec-1 6V (Sigma) 303-01 A-28
IN-VEHICLE REPAIR
Valve Cover(21 141 0)
Materials 4. Remove the valve cover. (. ,
Name Specification
I Silicone grease IESE-MlC171-AA I
Removal
A WARNING:Do not smoke or carry lighted
tobacco or open flame of any type when
working on or near any fuel related
components. Highly flammable mixtures
are always present and may ignite. Failure
to follow these instructions may result
in
personal injury.
1. Disconnect the battery ground cable. For
additional information, refer to
Section
414-01 [Battery, Mounting and
Cables].
2. Remove the air cleaner. For additional
information, refer to Section
303-12 [Intake
Air Distribution and Filtering].
3. Disconnect the spark plug electrical
connectors and detach the wires from the
valve cover.
Installation
1. N0TE:Check the valve cover gasket for
damage and install a new valve cover gasket
if necessary.
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 1: Tighten bolt 1 by 3 to 4 turns.
Stage 2: Tigthen bolts 1 through 13 to 3 Nm.
Stage 3: Tigthen bolts 1 through 13 to 9 Nm.
2m ACAUTION:~~~ 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 depth of
5-10 mm.
- - --
2006.0 Fiesta 1212006 GI 83729en
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Engine - 1.25L Duratec-1 6V (Sigma)llI4L I 303-01 Am29 Duratec-1 6V (Sigma)ll .6L Duratec-1 6V (Sigma) 303-01 A-29
IN-VEHICLE REPAIR
Connect the spark plug electrical connectors
and attach the wires to the valve cover.
3. Install the air cleaner. For additional
information, refer to Section 303-1
2 [Intake
Air Distribution and Filtering].
4. Connect the battery ground cable. For
additional information, refer to
Section 414-01 [Battery, Mounting and
Cables].
2006.0 Fiesta 1212006 GI 83729en
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Page 510 of 1226

Engine - 1.25L Duratec-16V (Sigma)llI4L
303-01 A-34 Duratec-1 6V (Sigma)ll .6L
Duratec-1 6V (Sigma)
303-01 A-34
IN-VEHICLE REPAIR
Install the camshafts and camshaft bearing 7. Install the timing belt.
caps.
For additional information, refer to: Timing
Tighten the camshaft bearing cap retaining Belt (303-01 Engine - 1.25L Duratec-1 6V
bolts in the sequence shown in three stages. (Sigma)ll.4L Duratec-1 6V (Sigma)ll .6L
Stage 1: One half turn on each bolt until all Duratec-1 6V (Sigma), Invehicle Repair).
of the camshaft bearing caps are in contact
with the cylinder head.
Stage
2: 7 Nm.
Stage
3: 45 degrees.
4. Adjust the valve clearances.
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).
5. NOTE:
Install new camshaft seals.
N0TE:Coat the camshaft journals and camshaft
seal lip with clean engine oil.
Using the special tool, install the camshaft
seals.
6. N0TE:Do not fully tighten the camshaft
pulley retaining bolts at this stage. Make sure
the camshaft
pulleys turn on the camshafts.
Install the camshaft pulleys.
2006.0 Fiesta 1212006 GI 83731 en
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