1991 MITSUBISHI ECLIPSE oil pressure

9-64ENGINE 4.8L Engine> -Front Case, Oil Pump and Silent Shaft
13.
INSTALLATlON OF OIL PUMP COVER GASKETInstall a new oil pump cover gasket in the groove of the
front case.
Front caseWhen installing the gasket, face the round side to the oil
pump cover.
3LUOO3 I
Flat iron plate
3EN184
MD998054
/
-----me
tCoat with
engine oil
6LUO26
12. INSTALLATION OF OIL PUMP OIL SEALInstall the oil seal into the oil pump cover, making sure that
its lip is in correct direction.
8. APPLICATION OF SEALANT TO OIL PAN(1) Clean both mating surfaces of oil pan and cylinder block.
(2) Apply sealant into groove of oil pan flange, ~keeping clear of
holes as shown. The width of sealant bead as sqeezed outof tube should be about 4 mm
(.I6 in.).
Caution
After application of sealant, do not exceed l’5 minutes
before installing the oil pan.
Specified sealant: MITSUBISHI GENUINE PART N
O.
MD997110 or equivalent
2. INSTALLATION OF OIL PRESSURE
SWlTCHCoat the threads of switch with sealant and install the
switch using the special tool.
Specified sealant: MOPAR Part No.4318034 or equiva-
lent
Caution
1. Keep the end of threaded portion clear of sealant.2. Avoid an
overtightening.
1. APPLICATION OF ENGINE OIL TO OIL FILTERApply a thin coat of engine oil to the packing surface.
,.Caution
Do not apply oil too much.

9-74ENGINE <2.0L DOHC Engine>- Service Adjustment Procedures
ENGINE <2.0L DOHC Engine>
SERVICE ADJUSTMENT PROCEDURES pi
CHECKING COMPRESSION PRESSURENOSFFAH(1) Before checking compression, ensure that engine oil, the
starter motor, and battery are all in good condition.
(2) Start the engine and wait until engine coolant temperature
has risen to
85-95°C (185-205°F).
(3) Stop the engine and pull the spark plug cables.
(4) Remove the spark plugs.
(5) Crank the engine
to. remove any foreign objects in the
cylinders.
Caution
Cover the spark plug holes with shop towel, etc., in
order to keep expelled foreign objects from flying out,and keep away from the holes. When measuring
compression with water, oil, or fuel having entered the
cylinder through a crack, etc., these will come flying
out of the spark plug hole hot and fast, so be sure to
take the proper precautions.(6) Set the compression gauge to the spark plug hole.
(7) Holding the throttle valve full open, crank the engine and
measure compression.
Limit:
: Min. 960 kPa (137 psi)
[250-400 rpm]6: Min. 800
kPa (114 psi) [250-400 rpml-(8) Perform 6 and 7 above for all the cylinders, ensuring that
compression pressure differential for each of the cylinders
is within the specified limit.
Differential limit: Max. 100 kPa (14 psi)(9) If a cylinder’s compression or pressure differential exceeds
the limit, add a small amount of oil through the spark plug
hole and repeat steps (6)-(8).
@If the addition of oil brings compression up, it is possiblethat there is poor contact between the piston ring and
cylinder wall.
@ If not compression does not come up, valve seizure,
poor valve seating, or a compression leak from the
gasket are all possible.‘I

ENGINE <2.0L DOHC Engine> - Engine Assembly
ENGINE ASSEMBLY
- REMOVAL AND INSTALLATION
;-
Pre-removal Operationl Eliminating Fuel Pressure in Fuel Line(Refer to GROUP 14-Service AdjustmentProcedures.)*Removal of Engine Hood
@Draining of Engine Coolant(Refer to GROUP 7-Service Adjustment Pro-
cedures.)*Removal of the Transaxle Assembly
(Refer to GROUP 21 -Transaxle Assembly.)
*Removal of the Radiator
(Refer to GROUP 7-Radiator.)
*Removal of Under Cover Left
26'
15
I4-6 Nm\I /MAO571
19@Installation of Under Cover Left
*Installation of the Transaxle Assembly
(Refer to GROUP 21 -Transaxle Assembly.)
I l Refilling of Enaine Coolant
/22/ 4-6 ‘Nm\213-4 ftlbs.23
Removal steps
~~1. Connection for accelerator cable orthrottle cable
2. Connection for accelerator cable (Auto-
cruise control)3. Connection for fuel return hose
4. Connection for brake booster vacuum
hose
5. Connection for solenoid valve (Turbo)
6. Solenoid valve bracket (Turbo)
7. Connection for air hose A (Turbo)
8. Connection for air hose
C (Turbo)9. Connection for fuel high pressure hose
10. O-ring11. Connection for heater hoses12. Connection for vacuum hoses
13. Connection for oxygen sensor
14. Connection for engine coolant
temperature sensor
15. Connection for engine coolant
temperature gauge unit(Refer
t’o GROUP 7-Service Adjustment Pro-cedures.)l Installation of Engine Hood‘I
16. Connection for engine coolanttemperature switch (Air conditioner)
17. Connection for crank angle sensor
18. Connection for TPS19. Connection for
ISC and idle switch
20. Connection for fuel injectors
2 1. Connection for ignition coil22. Connection for power transistor
23. Connection for knock sensor (Turbo)
24. Connection for EGR temperature sensor
(California vehicles only)
25. Connection for ground cable26. Control wiring harness
NOTE(I) Reverse the removal procedures to reinstall.
(2) e+ : Refer to “Service Points of Installation”.(3) m : Non-reusable parts

9-82ENGINE <2.0L DOHC Engine> - Engine Assembly
23-27 Nm
/17-20 ftlbs.
60-60 Nm
43-58 ft.lbs.50-65 Nm*36-47 ft.lbs.*27. Connection for oil pressure switch (Power
steering)28. Connection for alternator
29. Alternator wiring harness clamp
30. Connection for oil pressure switch
31, Connection for oil pressure gauge unitl + l * 32.Power steering oil pump+9 ~~ 33. Air conditioner compressor
34. Self-locking nuts
35. Gasket
36. Pressure hose (Power steering)
37. Bracket
4*38. Engine mount bracket
30-40 Nm
22-29 ftlbs.
.--
OlAO561
1
I40-60 Nm
29-43 ft.lbs.39. Self-locking nut
+e l + 40. Engine assembly
NOTE(I) Reverse the removal procedures to reinstall.(2) l * : Refer to “Service Points of Removal”.(3) I)+ : Refer to “Service Points of Installation”.(4) m : Non-reusable parts(5)For tightening locations indicated by the * symbol, first
tighten temporarily, and then make the final tightening
with the entire weight of the engine applied to the
vehicle bodv.
SERVICE POINTS OF REMOVALNOSSBDFa
32. DISCONNECTION OF POWER STEERING OIL PUMPDisconnect the oil pump with hoses from the bracket.
NOTEThe removed power steering oil pump should be fastened
A(by using rope, etc.) in a position that will not interfere with
the removal/installation of the engine assembly.

9-90ENGINE <2.0L DOHC Engine> - Cylinder Head Gasket
CYLINDER HEAD GASKETNOSJA-S2.5-3.5 Nm 19
3 4 K
REIVIOVAL AND INSTALLATION2-3 ft.lbs.\ I i-6
Pre-removal Operation*Eliminating Fuel Pressure in Fuel20Line1\(Refer to GROUP 14-Service Ad-justment Procedures.)eDraining of Engine Coolant(Refer to GROUP 7-Service Adjust-
ment Procedures.)
,,vs4-6 Nm
’
II28
2936’
/w,=
3i38OlAO5.69
Removal stepsl
1. Connection for accelerator cable orthrottle cable
2. Connection for accelerator cable (Auto-
cruise control)3. Connection for oxygen sensor
temperature sensor
5. Connection for engine coolant
temperature gauge unit6. Connection for engine coolant
7. Connection for crank angle sensor
8. Connection for TPS
ISC and idle switch
10. Connection for fuel injector
12. Connection for power transistor
13. Connection for knock sensor (Turbo)
14. Connection for EGR temperature sensor
(California vehicles only)
15. Connection for ground cable
+e l + 17. Connection for radiator upper hose
/\05ADl9019. Center cover
20. Connection for spark plug cable assembly
21. Connection for air intake hose (Turbo)
22. Connection for breather hose (Turbo)
23.Airintakehose24. Connection for breather hose+e l 25. Connection for fuel high pressure hose26. O-ring
27. Connection for vacuum hoses
28. Connection for heater hose
29. Connection for water by-pass hose
30. Connection for PCV hose
31. Connection for vacuum hose (Turbo)
32. Connection for water hose (Turbo)
33. Eye-bolt (Turbo)
34. Gasket (Turbo)
35. Connection for oil pipe (Turbo)
36. Connection for vacuum hoses (Turbo)
37. Connection for fuel return hose
38. Connection for brake booster vacuum
hoseA
NOTE(1) Reverse the removal procedures to reinstall.(2) +I) : Refer to “Service Points of Removal”.
(3) ~~ : Refer to “Service Points of Installation”.
(4) m : Non-reusable parts

ENGINE <2.0L DOHC Engine> - Timing Belt
TIMING BELT
REMOVAL AND INSTALLATION
I
Pre-removal Operation*Removal of Under Cover
I
50-65 Nm36-47 ft.lbs.
50-65“Nm36-47 ft:lbs.30-60-80
Nm22-20-3\0
Nm14-22 ftlbs.
lo-i2 Nm7-9 ftlbs.
Removal steps
1. Clamp for pressure hose (power steering)2. Bracket
3. Engine mount bracket
4. Clamp of return pipe (power steering)
5. Drive belt (alternator)6. Drive belt (power steering)
7. Tensioner pulley bracket
8. Drive belt (air conditioner)9. Water pump pulley
10. Water pump pulley (power steering)11. Crankshaft pulley12. Timing belt front upper cover13. Timing belt front lower cover
14. Center cover
15. Breather hose16. PCV hose
17. Connection for spark plug cables
l *
4*
NOTE4+ : Refer to “Service Points of Installation”.
WA0581
18.Rocker cover19.Semi-circular packing
20.Plug rubber2 1.Auto tensioner
22.Timing belt
23.Tensioner pulley
24.Tensioner arm
25.Idle oullev26. Camshaft sprocket
27. Oil pump sprocket
28. Crankshaft sprocket bolt
29. Special wastier
30. Crankshaft sprocket
31. Flange32. Tensioner
“B”33. Timing belt “B”
34. Silent shaft sprocket
35. Spacer36. Crankshaft sprocket “B”
37. Left engine support bracket
38. Timing belt rear right cover
39. Timing belt rear left cover (upper)
40. Timing belt rear left cover (lower)

9-96ENGINE <2.0L DOHC Engine> - Timing Belt
116
/18
Iv- IL 1’11117-9 ftlbs.
\43-49
Nm-_---. . .
30-42 Nm$0
22-30 ftlbs.
\
j2 \ 36
33
15-22 Nm
11-16 ftlbs.
I20-27 Nm\h \
14-20 f&.lbs.110-130 Nm cI,60-94 f
\z/OIAOS83-ama .I~..su--Du Nrnt Ibs .,iJ 36-43 ft.lbs.. .
Installation steps
40. Timing belt rear left cover (lower)
39. Timing belt rear left cover (upper)
38. Timing belt rear right cover37. Left engine support bracket
I)+ 36. Crankshaft sprocket “B”
l + 35. Spacer34. Silent shaft sprocket
l + 33. Timing belt “B”
l 4Adjustment of timing belt “B” tension
32. Tensioner “B”
l + 31. Flange++ 30. Crankshaft sprocket
29. Special washer
28. Crankshaft sprocket bolt
l + 27. Oil pump sprocketl + 26. Camshaft sprocket25. Idle pulley
e+ 21. Auto tensioner24. Tensioner arml 23. Tensioner pulleyl + 22. Timing belt
l 4Adjustment of timing belt tension20. Plug rubberl + 19. Semi-circular packingl 4 18. Rocker cover
17. Connection for spark plug cables16. PCV hose15. Breather hose14. Center cover
l + 13. Timing belt front lower covere+ 12. Timing belt front upper cover11. Crankshaft pulley10. Water pump pulley (power steering)
9. Water pump pulley
l +8. Drive belt (air conditioner)7. Tensioner pulley bracketI)+ 6. Drive belt (power steering)l +5. Drive belt (alternator)
4. Return pipe clamp bolt (power steering)3. Engine mount bracket
2. Bracket
1. Clamp for pressure hose (power steering)
NOTE+4 : Refer to “Service Points of Installation”.

ENGINE <2.0L DOHC Engine> - Timinn Belt
SpacerChahfered
6s
il seal
6EN009Silent shaft
nsprocketI
Timing
markCrankshaft
) ~sprocket “6”Center of
tensioner
pulley
Center of
installation bolt
installation bolt
-35. INSTALLATION OF SPACER
(1) Apply a thin coat of engine oil to the outer circumfer-
ence of the spacer.
(2) Install the spacer with the chamfered end facing the oil
seal.
NOTEIf the spacer is installed adversely, the oil seal may be
damaged, resulting in the oil leaks.
33. INSTALLATION OF TIMING BELT “B”
(1) Ensure that crankshaft sprocket “B” timing mark and
the silent shaft sprocket timing mark are aligned.
(2) Fit timing belt “B” over crankshaft sprocket “B” and
the silent shaft sprocket. Ensure that there is no slack inthe belt.
.ADJUSTMENT OF TIMING BELT “B” TENSION
(1) Temporarily fix the timing belt “B” tensioner such that
the center of the tensioner pulley is to the left and
above the center of the installation bolt, and temporarilyattach the tensioner pulley so that the flange is toward
the front of the engine.
(2) Holding the timing belt “B” tensioner up with your
finger in the direction of the arrow, place pressure on
the timing belt so that the tension side of the belt is
taut. Now tighten the bolt to fix the tensioner.
Caution
When tightening the bolt, ensure that the tensioner
pulley shaft does not rotate with the bolt. Allowing
it to rotate with the bolt can cause excessive
tension on the belt.
(3) To ensure that the tension is correct, depress the belt
(point A) with a finger. If not, adjust.
Standard value: 5-7 mm
(.20-.28 in.)