FORD FIESTA 2007 Workshop Manual

Engine Emission Control - 1.3L Duratec-8V
(Rocam)ll.25L Duratec-1 6V (Sigma)ll.4L
303-08A-5 Duratec-1 6V (Sigma)/l.GL Duratec-1 6V (Sigma) 303-08A-5
DESCRIPTION AND OPERATION
PCV
- 1.4Ll1.6L Duratec 16V
Description The crankcase gases are freed of oil in the valve
cover and in the PCV oil separator in order to
prevent the oil from being sucked in and burned.
housing The
PCV valve is located in the PCV oil separator.
The amount of crankcase gases depends on the
engine speed.
The crankcase gases
are sucked
by the PCV valve
into the intake manifold. 3
4
2006.0 Fiesta 1212006 GI 67099en
Hose from PCV oil separator to intake
manifold
intake manifold.
PCV
oil separator with integral PCV valve The
PCV valve is opened by the vacuum in the
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Engine Emission Control - 1.3L Duratec-8V
(Rocam)ll.25L Duratec-1 6V (Sigma)ll.4L
Duratec-1 6V (Sigma)ll .6L Duratec-I 6V (Sigma)
DIAGNOSIS AND TESTING
Engine Emission Control
lnspection and Verification
1. Verify the customer concern.
2. Visually inspect for obvious signs of mechanical
damage.
3. If an obvious cause for an observed or reported
Visual lnspection Chart
I 1 concern is found, correct the cause (if possible)
I Mechanical I before proceeding to the next step.
. -
Symptom Chart
Positive crankcase ventilation (PCV) valve
PCV separator
Symptom Chart
Symptom
Excessive crankcase pressure
4. If the cause is not visually evident, verify the
symptom and refer to the Symptom Chart.
Oil in the air intake system Possible
Sources
Blocked PCV valve.
Blocked PCV separator.
Blocked PCV hose.
Restriction in PCV separator.
PCV valve permanently open. Action
CLEAN
or INSTALL new PCV
components as necessary.
TEST the system for normal
operation. If the concern
persists, REFER to
Section 303-00 [Engine
System
- General Information].
CLEAN or INSTALL a new
PCV separator. TEST the
system for normal operation.
-
INSTALL a new PCV valve.
TEST the system for normal
operation.
2006.0 Fiesta 1212006 Gl48220en
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Engine Emission Control - 1.3L Duratec-8V
(Rocam)llI25L Duratec-1 6V (Sigma)llm4L
303-O8A-7 Duratec-1 6V (Sigma)ll .6L Duratec-1 6V (Sigma) 303-0844-7
REMOVAL AND INSTALLATION
Crankcase Vent Oil Separator
i
Removal
1. Remove the air cleaner. For additional
information, refer to Section
303-1 2 [Intake
Air Distribution and Filtering].
2. Remove the intake manifold. For additional
information, refer to Section 303-01A
[Engine
-- 1.25L Duratec-1 6V (Sigma)ll.4L
Duratec-1 6V (Sigma)llm6L Duratec-1 6V
(Sigma)] I 303-01 B [Engine -- 1.4L
Duratorq-TDCi (DV) Diesel] I 303-01 C [Engine
-- 1.3L Duratec-8V (Rocam)] I 303-01 D
[Engine
-- 2.OL Duratec-HE (M14)I 1 303-01 E
[Engine
-- 1.6L Duratorq-TDCi (DV) Diesel].
3. Remove the crankcase vent oil separater.
Discard the gasket.
Installation
I. N0TE:lnstall a new crankcase vent oil
separator gasket.
To install, reverse the removal procedure.
2006.0 Fiesta 1212006 G210048en
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Engine Emission Control - 2.OL Duratec-HE
303-08B-1 (MI41 303-08B-1
1 SECTION 303-08B Engine Emission Control - 2.OL
Duratec-HE (M14)
VEHICLE APPLICATION:2006.0 Fiesta
CONTENTS PAGE
SPECIFICATIONS
Specifications ........................................................................\
.......................................... 303-088-2
DESCRIPTION AND
OPERATION
Engine Emission Control ........................................................................\
............................ 303-088-3
DIAGNOSIS AND TESTING
Engine Emission Control ........................................................................\
...................... 303-088-6
Inspection and Verification
........................................................................\
........................ 303-088-6
Symptom Chart
........................................................................\
.......................................... 303-088-6
REMOVAL AND INSTALLATION
,, Exhaust Gas Recirculation (EGR) Valve ........................................................................\
.... 303-088-8
Crankcase Vent Oil Separator
............................. ........................................................... 303-088-1 0
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Engine Emission Control - 2.OL Duratec-HE
(MI41
SPECIFICATIONS
Toraue Specifications
I Description I Nm I Ib-ft I Ib-in I/
I Exhaust gas recirculation (EGR) valve bolts I 25 I 18 I - I\
2006.0 Fiesta 12/2006 G37567en
EGR valve outlet tube union
Crankcase vent oil separator retaining bolts 55
10
41
-
-
89
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Engine Emission Control - 2.OL Duratec-HE
303-08B-3
(MI41 303-08B-3
DESCRIPTION AND OPERATION
Engine Emission Control
1 2 1 EGRvalve gasket I oxide exhaust emissions.
Item Description introduced to the incoming charge in the intake
1
The exhaust gas recirculation (EGR) system allows
intake manifold by the EGR valve.
Exhaust gas recirculation (EGR) valve
--
3
a measured quantity of exhaust gas to be directed The EGR valve is controlled by an input from the back
to the intake manifold. The exhaust gas is powertrain control module
manifold, where it dilutes the air fuel mixture and
lowers the peak gas temperature, reducing nitrogen
2006.0 Fiesta 1212006 G37563en
the cylinder head from the exhaust manifold to the
-
EGR outlet The exhaust gas
is drawn through a passage within
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Engine Emission Control - 2.OL Duratec-HE
303-08B-4
(MI41 303-08B-4
DESCRIPTION AND OPERATION
Item Description two hoses. One PCV hose connects the PCV valve
to the intake manifold, the other PCV hose
2
3
The positive crankcase ventilation (PCV) system
consists of a valve mounted in the crankcase vent
oil separator (attached to the cylinder block) and
connects the valve cover to the air cleaner. 1
4
2006.0 Fiesta 1212006 G37563en
Positive crankcase ventilation (PCV) valve
PCV hose
Crankcase vent oil
se~arator
Under idle and part throttle conditions, the
crankcase vapor flows through the intake manifold
Crankcase vent oil separator retaining
bolt into the combustion chambers where the vapor is
burnt during combustion.
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Engine Emission Control - 2.OL Duratec-HE
303-08B-5
(MI41 303-08B-5
DESCRIPTION AND OPERATION
[ E57308
i, ' Item Description I
I 1 ( PCV hose to valve cover connector I
Under full throttle conditions, the crankcase vapor
flows from the valve cover into the air cleaner
through the PCV hose.
-
2
3
2006.0 Fiesta 1212006 G37563en
PCV hose
PCV hose to air cleaner connector
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Engine Emission Control - 2.OL Duratec-HE
303-08B-6
(MI41 303-08B-6
DIAGNOSIS AND TESTING
Engine Emission Control
lnspection and Verification
General Equipment Visual Inspection Chart L..
I. Verify the customer concern.
2. Visually inspect for obvious signs of mechanical
or electrical damage.
Worldwide Diagnostic System
(WDS)
- Hose(s)/hose joints
- Gasket(s)
- Positive crankcase
ventilation (PCV)
valve
- PCV separator
Mechanical
- Exhaust gas recircu-
lation (EGR) valve
Electrical
- Electrical
con
nector(s)
- Wiring harness
- Fuse(s)
- Relay
- EGRvalve
- Powertain control
module (PCM)
3. If an obvious cause for an observed or reported
concern is found, correct the cause (if possible)
before proceeding to the next step.
4. If the concern is not visually evident, verify the
symptom and refer to the Symptom Chart.
Symptom Chart
Symptom Chart
Symptom Possible Sources Action
I
Poor engine performance EGR valve.
Using WDS, CHECK the EGR
Valve Duty Cycle input signal
I to the EGR vacuum regulator
valve. If the result is 0%,
REMOVE the EGR valve.
REFER to Exhaust Gas Recir-
culation (EGR) Valve
- in this
section.
INSPECT the EGR valve and
valve seat for damage. Make
sure that the EGR valve is in
the closed position. If the EGR
valve is not closed. INSTALL
a
new EGR valve. TEST the
system for normal operation. If
the result is not 0% continue
the engine diagnostic using
WDS.
2006.0 Fiesta 1212006 G334290en
Excessive crankcase pressure Blocked or damaged PCV
hose(s).
Blocked crankcase vent oil
separator. CHECK
the PCV system
components for blockages, CLEAN or INSTALL new
components as necessary.
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