303-01C-1
Engine Ð Cobra 4.6L (4V)
303-01C-1
DESCRIPTION AND OPERATION
Engine
Induction System
The sequential multiport fuel injection (SFI)
provides the fuel/air mixture needed for combustion
in the cylinders. The eight solenoid-operated fuel
injectors:
WARNING: Do not operate the engine
with the hood open until the fan blade has been
first examined for possible cracks and separation.
The 4.6L (4V) (281 CID) Cobra engine is a V-8
with the following features:
· are mounted in the lower intake manifold.
· meter fuel into the air intake stream in accordance
with engine demand.
· intercooled supercharger
· dual overhead camshafts
· are positioned so that their tips direct fuel just
ahead of the engine intake valves.
· four valves per cylinder
· sequential multiport fuel injection (SFI)
· an aluminum intake manifold
· aluminum cylinder heads
· are connected in series with the fuel pressure
sensor.
· supply fuel from the fuel tank with a fuel pump
mounted in the fuel tank.
· a cast aluminum, 90-degree V- cylinder block
A constant fuel pressure drop is maintained across
the fuel injectors by the fuel pressure sensor. The
fuel pressure sensor:
· individually chain-driven camshafts with a
hydraulic timing chain tensioner on each timing
chain
· is positioned upstream from the fuel injectors on
the fuel injection supply manifold.
· the electronic ignition system with eight ignition
coils
Valve Train
Identification
The valve train operates as follows:
Always refer to these labels when replacement parts
are necessary or when checking engine calibrations.
The engine parts often differ within a CID family.
Verification of the identification codes will ensure
that the correct parts are obtained. These codes
contain all the pertinent information relating to the
dates, optional equipment and revisions. The Ford
Master Parts Catalog contains a complete listing of
the codes and their application.
· ball-tip hydraulic lash adjusters provide automatic
lash adjustment.
· roller followers ride on the camshaft lobes,
transferring the up-and-down motion of the
camshafts to the valves in the cylinder heads.
Positive Crankcase Ventilation System
All engines are equipped with a closed-type positive
crankcase ventilation system recycling the crankcase
vapors to the upper intake manifold.
Code Information
The engine code information label, located on the
side of the valve cover and the front side of the
valve cover, contains the following:
Lubrication System
The engine lubrication system operates as follows:
· engine build date
· engine plant code
· engine code
· oil is drawn into the oil pump through the oil
pump screen cover and tube in the sump of the
oil pan.
· oil is pumped through the oil bypass filter on the
left front side of the cylinder block.
Exhaust Emission Control System
Operation and necessary maintenance of the exhaust
emission control devices used on this engine is
covered in the Powertrain Control/Emissions
Diagnosis (PC/ED) manual.
· oil enters the main oil gallery where it is
distributed to the crankshaft main journals and to
both cylinder heads.
Copyright 2002, Ford Motor Company
Last updated: 6/14/2002
2003 Mustang, 8/2002
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303-01C-3
Engine Ð Cobra 4.6L (4V)
303-01C-3
DESCRIPTION AND OPERATION (Continued)
Item Part Number Description
Item Part Number Description
13
14
Ð
Spacer assembly gasket
1
2
6F066
N806154
9F715
Ð
Supercharger assembly
Screws (2 req' d)
9D475
Exhaust gas recirculation
valve
3
Idle air control valve
Idle air control valve gasket
Spacer assembly
15
16
17
Ð
Stud
4
9D477
Ð
Exhaust gas recirculation tube
5
9P697
9E936
9E926
Ð
Manifold absolute pressure
sensor
6
Throttle body gasket
Throttle body
7
18
19
20
9J460
9J459
9J472
Differential pressure feedback
EGR system
8
Bolts (4 req' d)
9
Ð
Bolts (2 req' d)
Exhaust gas recirculation
vacuum regulator
10
11
12
9E926
N804178
Ð
Throttle position sensor
Nuts (4 req' d)
Vacuum accessory bracket
Studs (4 req' d)
(Continued)
2003 Mustang, 8/2002
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303-01C-4
Engine Ð Cobra 4.6L (4V)
303-01C-4
DESCRIPTION AND OPERATION (Continued)
2003 Mustang, 8/2002
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303-01C-5
Engine Ð Cobra 4.6L (4V)
303-01C-5
DESCRIPTION AND OPERATION (Continued)
Item Part Number Description
Item Part Number Description
13
14
9J447
9L438
Lower intake manifold
1
2
3
12B637
9C986
9F792
Wiring harness
Coolant intake manifold
gasket
Fuel pulse damper
Fuel injection supply
manifold
15
16
17
18
19
20
21
22
23
24
Ð
Coolant tubes
9N491
W701592
NL443
NL443
W506404
6K755
6F066
N605892
9726
Coolant intake manifold
Bolt
4
5
6
9F593
Ð
Fuel injector
Stud
Inter cooler hose
Inter cooler hose
Bolts (10 req' d)
Charge air cooler
Supercharger assembly
Bolt
9D475
Exhaust gas recirculation
valve
7
8
W701232
N806979
Ð
Bolt
Stud
9
EGR vacuum hoses
Vacuum actuator valve
Bolts (2 req' d)
Bolts (10 req' d)
10
11
12
6F089
N605892
Ð
Accelerator cable bracket
(Continued)
2003 Mustang, 8/2002
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303-01C-6
Engine Ð Cobra 4.6L (4V)
303-01C-6
DESCRIPTION AND OPERATION (Continued)
2003 Mustang, 8/2002
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303-01C-7
Engine Ð Cobra 4.6L (4V)
303-01C-7
DESCRIPTION AND OPERATION (Continued)
Item Part Number Description
Item Part Number Description
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
N806165
W701512
8A528
Washer
1
2
N605904
N620480
6A946
17K814
N811268
8620
Bolt
Stud
Nut
Water pump pulley
Bolts (4 req' d)
Bolts (4 req' d)
Water pump
Bolt
3
Cover
N806282
N806177
8501
4
Alternator bracket assembly
Bolts (2 req' d)
5
6
Accessory drive belt
Bolt (4 req' d)
N808102
19A216
N804178
N806300
N806300
N806155
6C315
7
N606543
6L266
Belt idler pulley
Nut
8
Timing chain tensioner
Timing chain (2 req' d)
Timing chain guide
Timing chain tensioner
Timing chain tensioner arm
Timing chain (2 req' d)
Bolt (2 req' d)
9
6268
Harness support bracket
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
6M256
6L266
Stud
Bolt
6L253
Crankshaft position sensor
Bolt
6268
N806155
6B288
N804958
6B274
Camshaft position sensor
Bolts (3 req' d)
Timing chain guide
Bolt
N808920
6C254
N606527
19D269
N806184
6306
Crankshaft extension support
pulley
A/C compressor
Bolts (3 req' d)
44
45
46
47
48
49
50
10153
Lower support bracket
Bolts (2 req' d)
Crankshaft sprocket
Timing chain tensioner arm
Ignition pulse ring
Engine front cover
Bolts (8 req' d)
N605909
8620
6L253
Accessory drive belt
Bolt
12A227
6C086
N811268
8B603
Belt idler bracket support
Stud
N806177
N806300
6700
N808198
9N491
Studs (5 req' d)
Hose and tube assembly
Crankshaft front seal
Crankshaft pulley
6316
(Continued)
2003 Mustang, 8/2002
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303-01C-8
Engine Ð Cobra 4.6L (4V)
303-01C-8
DESCRIPTION AND OPERATION (Continued)
2003 Mustang, 8/2002
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303-01C-9
Engine Ð Cobra 4.6L (4V)
303-01C-9
DESCRIPTION AND OPERATION (Continued)
Item Part Number Description
Item Part Number Description
15
6B278
Camshaft bearing cap (2
req' d)
1
2
3
4
5
6083
Ð
Cylinder head gasket
Bolt (2 req' d)
Washer (2 req' d)
Spacer
16
17
9448
Exhaust manifold gasket
Ð
9F485
EGR valve tube to manifold
connector
6255
Ð
Secondary timing chain (2
req' d)
18
19
20
21
22
23
24
25
26
27
W701706
9431
Nut (8 req' d)
Exhaust manifold
PCV tube
6
7
Ð
Screw and washer
6C324
6A505
N808199
6766
6C271
Timing chain vibration
damper
Valve cover
Bolt (20 req' d)
Oil filler cap
Ignition coils
Ignition coil cover
Bolt (4 req' d)
Cylinder head
8
9
6B277
Ð
Camshaft bearing cap
Bolt (24 req' d)
12A366
6P068
10
11
12
13
14
6A271
6529
Camshaft
Roller follower (8 req' d)
Hydraulic lash adjuster
Bolt (20 req' d)
N807309
6050
6C501
6065
6A273
Camshaft
(Continued)
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303-01C-10
Engine Ð Cobra 4.6L (4V)
303-01C-10
DESCRIPTION AND OPERATION (Continued)
2003 Mustang, 8/2002
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303-01C-11
Engine Ð Cobra 4.6L (4V)
303-01C-11
DESCRIPTION AND OPERATION (Continued)
Item Part Number Description
Item Part Number Description
11
12
13
14
15
16
17
18
19
20
21
6582
Valve cover
1
2
6214
6211
Bolt (2 req' d)
6051
Cylinder head gasket
Nut (8 req' d)
Connecting rod bearing (16
req' d)
W701706
9430
3
4
5
6
7
6140
6135
6110
6159
6159
Piston pin retainer (16 req' d)
Piston pin (8 req' d)
Piston (8 req' d)
Exhaust manifold
9448
Exhaust manifold gasket
Stud (8 req' d)
W701681
6049
Piston ring (8 req' d)
Cylinder head
Piston ring (8 req' d) (part of
6100)
6C527
6200
Spark plug gasket (8 req' d)
Connecting rod (8 req' d)
Connecting rod (8 req' d)
Piston ring (8 req' d)
8
6150
Piston ring (8 req' d) (part of
6100)
6200
6161
9
6152
6758
Piston ring (8 req' d)
10
Crankcase vent tube and
connector
(Continued)
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303-01C-12
Engine Ð Cobra 4.6L (4V)
303-01C-12
DESCRIPTION AND OPERATION (Continued)
2003 Mustang, 8/2002
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303-01C-13
Engine Ð Cobra 4.6L (4V)
303-01C-13
DESCRIPTION AND OPERATION (Continued)
Item Part Number Description
Item Part Number Description
8
9
N806156
9278
Bolt (4 req' d)
1
2
3
4
5
6
7
8555
Water bypass tube
Oil level indicator
Oil level indicator tube
Bolt
Oil pressure sender
Oil filter adapter
Oil filter adapter gasket
Dowel
6750
10
11
12
13
6884
6754
6A636
N620482
87836
N806155
6C358
6714
Bolt (10 req' d)
Oil bypass filter
Oil cooler
Plug
6A642
(Continued)
Item Part Number Description
Item Part Number Description
11
12
13
14
15
16
17
18
19
N806155
6310
Bolt (6 req' d)
1
2
N807198
N807309
N807959
18663
Dowel pin (2 req' d)
Bolt
Crankshaft oil slinger
Flywheel
6375
3
Bolt
N808139
7550
Bolt (8 req' d)
4
Heater water hose
Bolt (2 req' d)
Knock sensor (2 req' d)
Bolt (2 req' d)
Heater water hose
Pilot bearing
Clutch disc
5
W500110
12A699
N807309
18696
7563
Clutch pressure plate
Bolt (6 req' d)
6
N808969
6701
7
Crankshaft rear oil seal
Dowel pin (2 req' d)
8
N806007
9
7120
10
6K318
Crankshaft rear retainer
(Continued)
2003 Mustang, 8/2002
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303-01C-14
Engine Ð Cobra 4.6L (4V)
303-01C-14
DESCRIPTION AND OPERATION (Continued)
2003 Mustang, 8/2002
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303-01C-15
Engine Ð Cobra 4.6L (4V)
303-01C-15
DESCRIPTION AND OPERATION (Continued)
Item Part Number Description
Item Part Number Description
15
6622
Oil pump screen pickup and
tube
1
2
N806177
N806459
6A341
6303
Bolt (4 req' d)
Dowel (4 req' d)
Thrust washer
Crankshaft
16
17
18
19
N806155
N811280
6345
Bolt (2 req' d)
Spacer (3 req' d)
Bolt (6 req' d)
3
4
5
6A339
6325
Thrust bearing
Main bearing cap (5 req' d)
Bolt (10 req' d)
Stud (4 req' d)
Oil pan baffle
Spacer
6C360
Main bearing cap adjusting
screw (10 req' d)
6
7
6345
20
6A338
Crankshaft main bearing (4
req' d)
8
6K258
6687
9
21
22
23
24
25
N806201
6621
Woodruff key
Oil pump
10
11
12
13
14
N806180
N605904
6710
Bolt
N806183
6333
Bolt (4 req' d)
Crankshaft main bearing
Water pump
Oil pan gasket
Oil pan
6675
8501
W701240
Bolt (16 req' d)
(Continued)
2003 Mustang, 8/2002
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