2003 FORD MUSTANG oil level

z
incorrectly functioning valve tappet
z air in lubrication system
z excessive valve guide wear
z low oil pressure
Excessive collapsed valve tappet gap can be caused by loose rocker arm seat bolts/nuts, incorrect
initial adjustment or wear of valve tappet face, or worn roller valve tappets, push rod (6565), rocker
arm (6564), rocker arm seat or valve tip. With valve tappet collapsed, check gap between the valve tip
and the rocker arm to determine if any other valve train parts are damaged, worn or out of adjustment.
An incorrectly functioning valve tappet can be sticking, caused by contaminants or varnish inside the
tappet. The tappet can have a check valve that is not functioning correctly, which can be caused by an
obstruction, such as dirt or chips that prevent the check valve from closing, or a broken check valve
spring. A tappet with a leakdown time out of specification can cause tappet noise. If no other cause for
noisy valve tappets can be found, the leakdown rate should be checked and new valve tappets
installed if found to be out of specification.
Assembled valve tappets can be tested with Hydraulic Tappet Leakdown Tester to check the leakdown
rate. The leakdown rate specification is the time in seconds for the plunger to move a specified
distance while under a 22.7 kg (50 lb) load.
Air bubbles in the lubrication system will prevent the valve tappet from supporting the valve spring
load. This can be caused by too high or too low an oil level in the oil pan or by air being drawn into the
system through a hole, crack or leaking gasket on the oil pump screen cover and tube. Klj . 17 ba
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A/C compressor bracket-
to-cylinder head stud bolt 25 18 —
Oil level indicator tube-
to-cylinder head bolt 10 — 89
Coolant recovery reservoir bracket-to-
GOP bolts 9 — 80
Motor mount-
to-subframe nuts 115 85 —
Oil pan drain plug 26 19 —
Wire harness bracket to motor mount nut 27 20 —
Steering column pinch bolt 47 35 —
Front subframe-
to-body bolts 90 66 —
Front subframe-
to-shock tower bolts 115 85 —
Oil pan-to-
cylinder block bolts a — — —
Oil pan-to-
transmission bell housing 45 33 —
Main bearing bridge nuts 32 24
Oil pump cover-
to-engine front cover bolts 25 18 —
Oil pump cover-
to-engine front cover bolt 10 89 —
Oil pickup tube-
to-cylinder block bolts 25 18 —
Oil pickup tube-
to-oil pan baffle nut 48 35 —
Flywheel-
to-crankshaft bolts 80 59 —
Wire harness bracket-
to-motor mount stud- nut 27 20 —
Engine ground strap-
to-motor mount nut 27 20 —
Motor mount-
to-motor mount bracket bolts 70 52 —
RH motor mount-
to-motor mount bracket nut 70 52 —
Hood ground strap-
to-hood hinge bolt 12 9 —
Hood hinge nuts 12 9 —
Generator mounting bracket 25 18 —
Power steering pump bracket nuts 8 — 71
Power steering pump bolts 25 18 —
Valve tappet guide plate bolts 12 9 —
Generator positive cable nut 10 — 89
Power steering pressure tube to pump nut 40 30 —
Accelerator cable bracket-
to-intake manifold bolts 10 — 89
42-
pin connector bolt 10 — 89
Transmission oil cooler tube bracket-
to-motor mount bracket nut 27 20
Torque converter-
to-flywheel nuts 36 27 —
Engine-
to-transmission bolts 40 30 —
Engine mount bracket-
to-engine bolts 70 52 —
Engine mount bracket-
to-engine nuts 70 52 —
Water pump pulley bolts 25 18 —
Oil filter
b — — —
Upper intake manifold-
to-lower intake manifold bolts a — — —
Lower intake manifold-
to-cylinder head bolts a — — —
Rocker arm pivot-
to-cylinder head bolts a — — — Klj . 5 ba
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Engine Front Cover Components 9 6A666 Positive crankcase ventilation valve
10 6565 Push rod
11 6564 Rocker arm
12 6A528 Rocker arm seat
13 N807699 Bolt
14 6518 Valve spring retainer key
15 6514 Valve spring retainer
16 6513 Valve spring
17 6A517 Valve stem seal
18 611497 Bolt
19 6049 Cylinder head —
LH 20 9448 Exhaust manifold gasket —
LH 21 17A084 Engine lifting eye
22 6754 Oil level indicator tube
23 9430 Exhaust manifold —
LH 24 6507 Intake valve
25 6505 Exhaust valve
26 6051 Head gasket —
LH 27 6051 Head gasket —
RH 28 9448 Exhaust manifold gasket —
RH 29 9430 Exhaust manifold —
RH 30 17A084 Engine lifting eye Klj . 2 ba
82003 Mustang Workshop Manual
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IN-
VEHICLE REPAIR
Oil Level Indicator and Tube
Removal and Installation 1. Remove the oil level indicator tube (6754). zRemove the bolt.
z Remove the oil level indicator tube.
z Remove and discard the oil level indicator tube O- ring.
2. To install, reverse the removal procedure.
SECTION 303-
01A: Engine — 3.8L 2003 Mustang Workshop Manual Klj . 1 ba
22003 Mustang Workshop Manual
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2. Remove the bolts and the RH engine support insulator.
3. Remove the special tool.
4. Remove the special tool.
5. Remove the bolt and the oil level indicator and tube. Discard the O-
ring. Klj . 2 ba
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78. Install the exhaust gas recirculation (EGR) tube.
79. Connect the EGR valve nut.
80. Using a new gasket, install the LH exhaust manifold. Tighten the nuts in the sequence shown.
81.
NOTE: Install a new O- ring seal.
Install the oil level indicator and tube and retaining bolt. Klj . 25 ba
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e
Specification in 90.200 mm diameter gauge.
f If applicable, measured vertically, +0.030- 0.050 mm (0.001-0.002 inch) measured horizontally (oval
pin bore).
g Pin bore and crank bearing bore must be parallel and in same vertical plane within the specified total
difference when measured at the ends of a 203 mm bar, 101.5 mm on each side of rod centerline.
Torque Specifications Description Nm lb-
ft lb-
in Main bearing cap adjusting bolts
a — — —
EGR sensor bracket 10 — 89
Belt idler pulley 25 18 —
Oil filter 15 11 —
Oil filter adapter insert 58 43 —
Camshaft sprocket bolt
a — — —
Connecting rod bolt
a — — —
Engine mount nuts 150 111 —
Engine mount-
to-cylinder block bolts 70 52 —
Exhaust manifolds
a — — —
Engine front cover bolts
a — — —
Drive belt tensioner bolts 25 18 —
A/C muffler 20 15 —
Battery cable support brackets 20 15 —
Cylinder head bolt
a — — —
Pulley-
to-crankshaft bolt a — — —
EGR valve to intake manifold 25 18 —
EGR valve tube to exhaust manifold fittings 40 30 —
Intake manifold-
to-cylinder head bolt 25 18 —
Main bearing cap bolt
a — — —
Oil filter adapter bolts 25 18 —
Oil level indicator tube bolt 10 — 89
Oil pump screen cover and tube-
to-oil pump bolt 10 — 89
Oil pan-to-
cylinder block bolt a — — —
Flywheel 80 59
Oil pan-to-
engine front cover bolts a — — —
Oil pump-
to-cylinder block bolt 10 — 89
Oil pump screen cover and tube-
to-main bearing cap stud spacer bolt 25 18 —
Water pump pulley bolts 25 18 —
Cam cover bolt
a — — —
Water pump-
to-cylinder block bolt 25 18 —
Water bypass tube 25 18 —
EGR tube nuts (2 req'd) 40 30 —
Power steering pump to engine 25 18 — Klj . 4 ba
62003 Mustang Workshop Manual
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6754 Oil level indicator tube
51 N806155 Bolt
52 N806139 Bolt
53 6750 Oil level dipstick
54 N811363 Bolt (2 req'd)
55 18198A Engine lifting eye
56 9430 Exhaust manifold
57 9448 Exhaust manifold gasket
58 6049 Cylinder head, RH
59 12405 Spark plug
60 W701681 Stud (8 req'd)
61 W701706 Nut (8 req'd)
62 6051 Head gasket
63 N807071 Bolt
64 10153 Generator mounting bracket
65 N811011 Bolt (2 req'd)
66 8549 Water outlet connector
67 10884 Water temperature indicator sender unit
68 N808130 Bolt (9 req'd)
69 N806807 O-
ring 70 N807309 Bolt (2 req'd)
71 12A366 Coil on plug (8 req'd)
72 9F593 Fuel injector
73 8575 Water thermostat
74 9424 Intake manifold
75 N806139 Bolt
76 N806164 Washer
77 6256 Camshaft sprocket
78 6265 Camshaft sprocket spacer
79 N807352 Bolt (4 req'd)
80 6A505 Valve cover
81 6758 Crankcase ventilation tube
82 N806070 Bolt (24 req'd)
83 6B280 Camshaft bearing cap
84 N806282 Bolt (4 req'd)
85 N807173 Bolt (2 req'd)
86 N808102 Bolt
87 19A216 Belt idler pulley
88 10300 Generator
89 N804178 Nut (2 req'd)
90 19A439 Bracket
91 Klj . 5 ba
92003 Mustang Workshop Manual
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