
ENGINE LUBRICATION SYSTEM
ENGINE LUBRICATION
Refer to Group 0, Lubrication and Maintenance for
recommended oil capacity to be used in various
engine application. System is full flow filtration,
pressure feed type. The oil pump is mounted in the
front engine cover and driven by the crankshaft.
Pressurized oil is then routed through the main oil
gallery, running the length of the cylinder block, sup-
plying main and rod bearings with further routing.
Rod bearing oil throw-off lubricates the pistons from
directed slots on the side of the connecting rod
assemblies. Camshaft and valve mechanisms are
lubricated from a full-length cylinder head oil gallery
supplied from the crankcase main oil gallery.
PRESSURE LUBRICATION
Oil drawn up through the pickup tube is pressur-
ized by the pump and routed through the full-flow fil-
ter to the main oil gallery running the length of the
cylinder block. A cylinder head restrictor, integral to
the cylinder head gasket, provides increased oil flow
to the main oil gallery (Fig. 2).
MAIN/ROD BEARINGS
A diagonal hole in each bulkhead feeds oil to each
main bearing. Drilled passages within the crankshaft
route oil from main bearing journals to connecting
rod journals.
CAMSHAFT/HYDRAULIC LASH ADJUSTERS
A vertical hole at the number five bulkhead routes
pressurized oil through a restrictor up into the cylin-
Engine Lubrication Components
1 ± O-RING
2 ± OIL FILTER ADAPTER
3 ± OIL PAN GASKET
4 ± OIL PAN
5 ± OIL PICK-UP TUBE
6 ± DRAIN PLUG7 ± O-RING
8 ± OIL PUMP BODY
9 ± FILTER
10 ± O-RING
11 ± NIPPLE
PL2.0L SOHC ENGINE 9 - 17
DESCRIPTION AND OPERATION (Continued)

(27) Start engine and run until operating temper-
ature is reached.
(28) Ensure engine is properly positioned. Refer to
Torque Struts in this section for adjustment proce-
dure.
(29) Adjust transmission linkage, if necessary.
INTAKE MANIFOLD
REMOVAL
WARNING: RELEASE FUEL SYSTEM PRESSURE
BEFORE SERVICING FUEL SYSTEM COMPONENTS.
SERVICE VEHICLES IN WELL VENTILATED AREAS
AND AVOID IGNITION SOURCES. NEVER SMOKE
WHILE SERVICING THE VEHICLE.
(1) Disconnect negative cable from battery.
(2) Remove the inlet air duct from intake manifold
to throttle body.
(3) Perform fuel system pressure release procedure
before attempting any repairs.Refer to Group 14,
Fuel System for procedures.
WARNING: WRAP SHOP TOWELS AROUND FUEL
HOSE TO CATCH ANY GASOLINE SPILLAGE
(4) Disconnect fuel supply line quick connect at the
fuel tube assembly. Refer to Group 14, Fuel System
for procedures.
(5) Remove fuel rail assembly attaching screws
and remove fuel rail assembly from engine. Cover
injector holes with suitable covering.
CAUTION: Do not set fuel injectors on their tips,
damage may occur to the injectors
(6) Disconnect brake booster hose (Fig. 27) and
PCV hose (Fig. 28) from intake manifold.
(7) Disconnect Manifold Absolute Pressure (MAP)
sensor electrical connector (Fig. 29).
(8) Disconnect knock sensor electrical connector
(Fig. 30).
(9) Disconnect wiring at starter.
(10) Remove the intake manifold to lower support
bracket bolts (Fig. 31).
(11) Remove intake manifold screws and washers.
Discard the fasteners. Remove intake manifold.
INSTALLATION
Before installing manifold. Clean all mating sur-
faces. Replace all O-ring gaskets with new gaskets
(Fig. 33). All intake manifold fasteners and washers
are to be discarded andNEWfasteners and washers
are to be used.(1) Install intake manifold onto cylinder head and
tighten fasteners to 12 N´m (105 in. lbs.) in sequence
shown in (Fig. 32).
Fig. 27 Brake Booster Hose
Fig. 28 PCV Hose
9 - 28 2.0L SOHC ENGINEPL
REMOVAL AND INSTALLATION (Continued)

CAUTION: When using the ASD Fuel System Test,
the Auto Shutdown (ASD) relay will remain ener-
gized for 7 minutes or until the ignition switch is
turned to the OFF position, or Stop All Test is
selected.
EXHAUST MANIFOLD
REMOVAL
(1) Disconnect negative cable from battery.
(2) Raise vehicle on hoist.
(3) Remove bolt attaching the wire harness heat
shield to the exhaust manifold support bracket (Fed-
eral and LEV) (Fig. 34), or to the exhaust manifold
(ULEV).
(4) Remove exhaust manifold support bracket
(Federal and LEV) (Fig. 35).
(5) Remove fasteners attaching exhaust system
flex joint to exhaust manifold flange. Move exhaust
system rearward to clear flange studs.
(6) ULEV equippedÐremove the support bracket
from cylinder block to exhaust manifold (Fig. 36).
(7) Lower vehicle.
(8) Disconnect CCV hose from rear of cylinder
head cover.
(9) Disconnect oxygen sensor connector and har-
ness clip.
(10) Remove heat shield attaching bolts (Fig. 37).
(11) Remove upper heat shield for access to mani-
fold bolts.
(12) Remove exhaust manifold bolts.
(13) ULEV equippedÐremove cylinder head cover.
Refer to procedure in this section. Cover cylinder
head opening with a suitable covering.
(14) Remove exhaust manifold from top of vehicle,
between cylinder head and cowl.
INSTALLATION
(1) Position exhaust manifold and gasket in place.
(2) Install exhaust manifold bolts and tighten in
sequence shown in (Fig. 38) to 23 N´m (200 in. lbs.).
(3) ULEV equippedÐposition upper heat shield on
exhaust manifold. Install bolts and tighten to 23 N´m
(200 in. lbs.).
(4) Position lower and upper heat shield on
exhaust manifold. Install heat shield bolts and
tighten to 11 N´m (95 in. lbs.) (Fig. 37).
(5) Connect oxygen sensor electrical connector and
harness clip.
(6) ULEV equippedÐinstall cylinder head cover.
Refer to procedures in this section.
Fig. 33 Intake Manifold Gaskets
1 ± INTAKE MANIFOLD O-RING GASKETS
Fig. 34 Wire Harness Heat Shield BoltÐFederal &
LEV Shown, ULEV Similar
1 ± BOLT
2 ± BRACKET
3 ± HEAT SHIELD
Fig. 35 Exhaust Manifold Support BracketÐFederal
& LEV
1 ± BRACKET
2 ± BOLT (M10)
3 ± BOLT (M12)
4 ± NUT
9 - 30 2.0L SOHC ENGINEPL
REMOVAL AND INSTALLATION (Continued)

(7) Connect CCV hose on cylinder head cover port.
(8) Raise vehicle.
(9) Install new flex joint to manifold flange gasket.
(10) Attach exhaust system to manifold flange and
tighten fasteners to 28 N´m (250 in. lbs.).
(11) Install exhaust manifold support bracket (Fed-
eral and LEV) (Fig. 35). Tighten M10 bolt to 54 N´m
(40 ft. lbs.), M12 bolt to 95 N´m (70 ft. lbs.), and nut
to 28 N´m (250 in. lbs.).
(12) ULEV equippedÐinstall support bracket to
cylinder block and exhaust manifold (Fig. 36). Snug
all bolts first then tighten to 54 N´m (40 ft. lbs.).
(13) Install bolt attaching wire harness heat shield
to support bracket (Federal and LEV) (Fig. 34), or
exhaust manifold (ULEV).(14) Lower vehicle.
(15) Connect negative cable to battery.
CYLINDER HEAD COVER
REMOVAL
(1) Disconnect CCV (Fig. 39) and PCV (Fig. 40)
hoses from cylinder head cover.
(2) Remove ignition coil and spark plug cables
(Fig. 41).
(3) Remove cylinder head cover bolts.
(4) Remove cylinder head cover.
INSTALLATION
(1) Clean gasket surfaces. Inspect gasket and seals
(Fig. 42). Replace as necessary. For replacement of
spark plug tube seals, refer to Spark Plug Tube Seals
in this section for procedure.
CAUTION: Do not attempt to loosen or remove baf-
fle plate attaching screws. The screws are self-tap-
ping, and in the attempt to retighten, thread damage
(stripping) will result.
Fig. 36 Exhaust Manifold Support BracketÐULEV
1 ± MANIFOLD SUPPORT BRACKET
2 ± OIL FILTER
3 ± BOLTS
Fig. 37 Exhaust Manifold Heat Shields
1 ± BOLTS
2 ± HEAT SHIELDS
Fig. 38 Exhaust Manifold Tightening Sequence
Fig. 39 CCV Hose
PL2.0L SOHC ENGINE 9 - 31
REMOVAL AND INSTALLATION (Continued)

(2) Install cylinder head cover and gasket. Tighten
bolts to 12 N´m (105 in. lbs.).
(3) Install ignition coil and spark plug cables (Fig.
41). Tighten ignition coil fasteners to 12 N´m (105 in.
lbs.).
(4) Connect CCV (Fig. 39) and PCV (Fig. 40) hoses.
SPARK PLUG TUBE SEALS
The spark plug tube seals are located in the cylin-
der head cover (Fig. 43). These seals are pressed into
the cylinder head cover to seal the outside perimeter
of the spark plug tubes. If these seals show signs of
hardness and/or cracking, they should be replaced.
REMOVAL
(1) Remove cylinder head. Refer to procedure in
this section.
(2) Using an appropriate tool, carefully remove
spark plug tube seals. Care should be taken not to
damage cylinder head cover sealing surfaces.
INSTALLATION
(1) Clean all sealing surfaces.
Fig. 40 PCV Valve Hose
Fig. 41 Ignition Coil and Spark Plug Cables
1 ± IGNITION COILS
2 ± SPARK PLUG CABLE
3 ± SPARK PLUG INSULATOR
Fig. 42 Cylinder Head Cover Gasket and Seals
1 ± CYLINDER HEAD COVER GASKET
2 ± SEAL
3 ± BOLT
4 ± SPARK PLUG TUBE SEALS
Fig. 43 Spark Plug Tube Seals
1 ± SPARK PLUG TUBE SEAL
2 ± CYLINDER HEAD COVER
9 - 32 2.0L SOHC ENGINEPL
REMOVAL AND INSTALLATION (Continued)

CYLINDER HEAD
REMOVAL
(1) Perform fuel system pressure release procedure
before attempting any repairs.Refer to Group 14,
Fuel System
(2) Disconnect negative battery cable.
(3) Remove power steering/air conditioning drive
belt. Refer to Group 7, Cooling System Accessory
Drive for procedure.
(4) Raise vehicle.
(5) Drain cooling system. Refer to Group 7, Cooling
System.
(6) Remove exhaust pipe from manifold.
(7) Remove right front wheel.
(8) Remove right side splash shield.
(9) Remove generator belt. Refer to Group 7, Cool-
ing System Accessory Drive Belts for procedure.
(10) Remove crankshaft damper. Refer to proce-
dure in this section.
(11) Remove lower torque strut.
(12) Lower vehicle and remove upper torque strut.
(13) Remove ground strap and power steering hose
support clip from engine mount bracket.
(14) Remove power steering pump assembly and
set aside.
(15) Support engine from beneath with a suitable
jack.
(16) Remove right side engine mount to bracket
through bolt.
(17) Remove the lower engine mount bracket bolt.
Raise engine slightly and remove the upper engine
mount bracket bolts.(18) Remove engine mount bracket. This procedure
may require additional raising/lowering of engine
until bracket will clear engine components.
(19) Remove front timing belt cover.
(20) Rotate engine until timing marks are aligned.
(21) Remove timing belt and tensioner. Refer to
procedures in this section.
(22) Remove camshaft sprocket. Refer to proce-
dures in this section.
(23) Remove rear timing belt cover.
(24) Disconnect fuel line at fuel rail.
(25) Remove coolant recovery container.
(26) Remove ground wire to cylinder head.
(27) Remove upper radiator hose.
(28) Remove intake manifold. Refer to procedure
in this section.
(29) Disconnect ignition coil electrical connector.
Remove coil pack and spark plug cables from engine.
(30) Remove Crankcase Closed Ventilation (CCV)
hose from cylinder head cover.
(31) Disconnect cam sensor and coolant tempera-
ture electrical connectors.
(32) Remove heater tube to cylinder head attach-
ing fasteners.
(33) Remove heater hose from thermostat housing
connector.
(34) Remove cylinder head cover.
(35) Remove cylinder head bolts.
(36) Remove cylinder head and gasket (Fig. 55).
PL2.0L SOHC ENGINE 9 - 37
REMOVAL AND INSTALLATION (Continued)

NOTE: Inspect camshaft bearing journals for scor-
ing. Cylinder head must be flat within 0.1 mm (0.004
inch) (Fig. 56).
INSTALLATION
EXAMINING CYLINDER HEAD BOLTS
NOTE: The cylinder head bolts should be examined
BEFORE reuse. If the threads are necked down, the
bolt(s) should be replaced (Fig. 57).
Necking can be checked by holding a scale or
straight edge against the threads. If all the threads
do not contact the scale, the bolt(s) should be
replaced.CLEANING CYLINDER HEAD SEALING SURFACES
CAUTION: When cleaning cylinder head and cylin-
der block surfaces, DO NOT use a metal scraper.
Sealing surfaces could be cut or ground, resulting
in gasket leaks. Use only the cleaning methods
shown in (Fig. 58). If required, use a white (120 grit)
3M RolocYbristle disk on aluminum surfaces. A
yellow (80 grit) bristle disk can be used on cast iron
surfaces with care.
(1) Clean the cylinder head and cylinder block
sealing surfaces using a wood/plastic scraper. Apply
solvent or a commercially available gasket remover
to help soften the gasket residue. If additional clean-
ing is required, use a white (120 grit) 3M Rolocy
bristle disk and a drill motor to remove gasket resi-
due.
Fig. 55 Cylinder Head Assembly
1 ± ROCKER SHAFT RETAINING BOLT
2 ± VALVE RETAINING LOCKS
3 ± VALVE
4 ± VALVE SPRING
5 ± VALVE SEAL AND VALVE SPRING SEAT ASSEMBLY
6 ± SPARK PLUG TUBE SEAL
7 ± CAMSHAFT
8 ± ROCKER ARM SHAFT RETAINER SPACER
9 ± GASKET10 ± SPACER
11 ± INTAKE ROCKER ARM/HYDRAULIC LASH ADJUSTER
ASSEMBLY
12 ± EXHAUST ROCKER ARM/HYDRAULIC LASH ADJUSTER
ASSEMBLY
13 ± CAMSHAFT SEAL
14 ± RETAINER SPACER
15 ± VALVE SPRING RETAINER
9 - 38 2.0L SOHC ENGINEPL
REMOVAL AND INSTALLATION (Continued)

(2) Apply MopartGasket Sealant (aerosol can) to
both sides of the new cylinder head gasket.
(3) Position a new cylinder head gasket on the
locating dowels.
(4) Position crankshaft sprocket to TDC, then
rotate crankshaft until mark is three teeth before
TDC (Fig. 59). This will ensure that no piston-to-
valve contact occurs upon installation of cylinder
head in the event of camshaft rotation.
(5) Position the cylinder head onto the cylinder
block. Make sure the cylinder head seats fully over
the locating dowels.
(6) Before installing cylinder head bolts, the
threads should be oiled with engine oil. The 4 shorter
bolts 164 mm (6.45 in.), are to be installed in posi-
tions 7, 8, 9, and 10 (Fig. 60).
(7) Tighten the cylinder head bolts in the sequence
shown in (Fig. 60). Using the 4 step torque method,
tighten according to the following values:²First All to 34 N´m (25 ft. lbs.)
²Second All to 68 N´m (50 ft. lbs.)
²Third All to 68 N´m (50 ft. lbs.)
²Fourth Turn an additional 1/4 Turn.Do not use
a torque wrench for this step.
(8) Install cylinder head cover.
(9) Install heater hose to thermostat housing con-
nector.
(10) Install heater tube to cylinder head attaching
fasteners.
(11) Connect cam sensor and coolant temperature
electrical connectors.
(12) Connect Crankcase Closed Ventilation (CCV)
hose to cylinder head cover.
Fig. 56 Checking Cylinder Head Flatness
1 ± FEELER GAUGE
2 ± STRAIGHT EDGE
Fig. 57 Checking Bolts for Stretching (Necking)
1 ± STRETCHED BOLT
2 ± THREADS ARE NOT STRAIGHT ON LINE
3 ± THREADS ARE STRAIGHT ON LINE
4 ± UNSTRETCHED BOLT
Fig. 58 Proper Tool Usage for Surface Preparation
1 ± ABRASIVE PAD
2 ± 3M ROLOCYBRISTLE DISC
3 ± PLASTIC/WOOD SCRAPER
Fig. 59 Crankshaft Sprocket Position
1 ± TDC MARK
PL2.0L SOHC ENGINE 9 - 39
REMOVAL AND INSTALLATION (Continued)