1991 MITSUBISHI ECLIPSE fuel

ENGINE <1.8L Engine> - Engine Assembly9-31
ENGINE ASSEMBLY
. REMOVAL AND INSTALLATION
N69SA-APre-removal Operation
@Eliminating Fuel Pressure in Fuel Line
(Refer to GROUP 14-Service AdjustmentProcedures.)@Removal of Engine HoodeDraining of Engine Coolant
(Refer to GROUP O-Maintenance Service.)
l Removal of the Transaxle Assembly(Refer to GROUP 21 -Transaxle Assembly.)
*Removal of the Radiator
(Refer to GROUP 7-Radiator.)
Post-installation Operation
@Installation of the Radiator
(Refer to GROUP 7-Radiator.)
l Installation of the Transaxle Assembly(Refer to GROUP 21 -Transaxle Assembly.)
@Refilling of Engine Coolant
(Refer to GROUP O-Maintenance Service.)
l Installation of Engine Hood4-6 Nm
“7
/61OlA05664-6 Nm
3-4
ft.lbs.
\
16
/io1\4-6Nm164-6Nm193-4ft.lbs.
173-4ft.lbs.OlA0643Removal steps
l +1. Connection for accelerator cable or
throttle cable
2. Connection for accelerator cable
(Auto-cruise control)
3. Connection for fuel high pressure hose
4. O-ring
5. Connection for heater hoses
6. Connection for vacuum hoses
7. Connection for fuel return hose
8. Connection for brake booster vacuum
hose
9. Connection for oxygen sensor
10. Connection for engine coolant
temperature gauge unit
11. Connection for engine coolant
temperature sensor12. Connection for
ISC13. Connection for TPS
14. Connection for MPS
15. Connection for fuel injectors
16. Connection for EGR temperature sensor
17. Connection for distributor
18. Connection for CRC filter
19. Connection for ground cable
20. Control wiring harness
NOTE(1) Reverse the removal procedures to reinstall.(2) l + : Refer to “Service Points of Installation”.
(3) m : Non-reusable parts

9-36ENGINE - Cylinder Head Gasket
CYLINDER HEAD GASKET
REMOVAL AND INSTALLATION4-6 Nm
73-4 ft.lbs.
NWJA-A
Pre-removal Operationl Eliminating Fuel Pressure in Fuel
Line(Refer to GROUP
14-Service Ad-
justment Procedures.)*Draining of En
ine Coolant
(Refer to GRO9P -/-Service Adjust-ment Procedures.)
(Refer to GROUP
7-Service Adjust-~~~~~~~n
?*
29?i
8
30-46 Nm
22-29 ft.lbs.
60-80 ium43-58 ftlbs.25
iy 24 \\3-4
ftlbs./2227 26
Removal steps
1. Air intake hose
2. Connection for breather hose
I)43. Connection for accelerator cable or
throttle cable
4. Connection for accelerator cable
(Auto-cruise control)
l +5. Connection for fuel high pressure hose
6. O-ring
+e W7. Connection for radiator upper hose
8. Connection for water hose
9. Connection for water by-pass hose
10. Connection for heater hose
11. Connection for vacuum hose
12. Connection for PCV hose
13. Connection for spark plug cable
14. Connection for fuel return hose
15. Connection for brake booster vacuum
hose
16. Connection for oxygen sensor
1\4-6 Nm
3-4 ftlbs.
OlAO556
QlAO64417. Connection for engine coolant
temperature gauge unit
18. Connection for engine coolant
temperature sensor
19. Connection for
ISC20. Connection for TPS
21. Connection for MPS
22. Connection for distributor
23. Connection for injector
24. Connection for EGR temperature sensor
(California vehicles only)
25. Connection for CRC filter
26. Connection for ground cable
27. Control wiring harness
28. Clamp for pressure hose (Power steering)
29. Engine mounting bracket
NOTE
(I) Reverse the removal procedures to reinstall.(2) Ce : Refer to “Service Points of Removal”.(3) ++ : Refer to “Service Points of Installation”.(4) m : Non-reusable parts

ENGINE <1.8L Engine> - Cylinder Head Gasket
OlAOlO:Intake sideFront of engine
I,Exhaust side
01R0390
4pply
sealant 1Mating marks
.,
iighDelivery pipe3ressureloseO-ring03Aoo79(2) Using the special tool, tighten the bolts in the
ordershown in two or three steps.
a-2
31. APPLICATION OF SEALANT TO SEMI-CIRCULAR PACK-ING
Apply a coating of the specified sealant to the semi-circularpacking and the cylinder head top surfaces.
/LSpecified sealant: MOPAR Part No.4318034 or equiva-
_ ‘-lent
7.INSTALLATION OF RADIATOR UPPER HOSE
Align the mating marks (of the radiator hose and hose
clamp), and then, while applying force in the direction of
the arrow in the illustration, set the hose clamp to the
trace marks (on the hose) remaining from the prior
connection.
Caution
Be sure to install the hose clamp at the trace marks (onthe hose) remaining from the prior connection.
5. CONNECTION OF FUEL HIGH PRESSURE HOSE
When connecting the fuel high-pressure hose to the
delivery pipe, apply a coating of gasoline to the hose union,and insert so that the O-ring is not damaged.
3. INSTALLATION OF ACCELERATOR CABLE OR
THROT- +TLE CABLE CONNECTION
Refer to GROUP
14-Service Adjustment Procedures.

ENGINE <1.8L Ennine> -Rocker Arms, Rocker Arm Shafts and Camshaft&49
MD9984431
6EN245
IFuel pump
3EN287
r
0
Camheight6EN0184
hl,
3EN153, Oil seal
MD998364
DEN632
SERVICE POINTS OF DISASSEMBLYNWLFM.
9. REMOVAL OF ROCKER ARM AND SHAFT ASSEMBLYBefore removing the rocker arm and shaft assembly, use
the special tool to ensure that the lash adjuster doesn’t fall
out.
Caution
Put the rocker arms and lash adjusters in order in
cylinder No. separated places with clear distinction
between the intake and exhaust ones to prevent
confusion.
INSPECTION
CAMSHAFT
NOBLCDDI
(1) Visually check the camshaft journal surfaces and replace if
damage or seizure is evident.
If the journal is seized, check the cylinder head for possibledamage. Check also for clogged oil holes in the cylinder
head.
(2) Check cams for excessive wear and damage and replace if
defects are evident. Measure the cam height and replace ifthe limit is not reached.
Standard value: 35.91 mm (1.4138 in.)
Limit: 35.41 mm (1.3941 in.)SERVICE POINTS OF
INSTALLATIONNOSLQACa
11. INSTALLATION OF OIL SEAL
(1) Apply engine oil to oil seal lip.
(2) Using the special tool, drive the camshaft oil seal into
the cylinder head.

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

9-90ENGINE <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

9-92ENGINE <2.0L DOHC Engine> - Cylinder Head Gasket
04A0090
r00
0
697
105
\Front of engine
*Intake side
Exhaust sideSERVICE POINTS OF REMOVAL
NOSJSAP
17. REMOVAL OF RADIATOR UPPER HOSEF-isMake mating marks on the radiator hose and hose clamp,
and then disconnect the radiator hose.
25. DISCONNECTION OF HIGH PRESSURE FUEL HOSE
Caution
Cover the hose connection with rags to prevent splash
of fuel that could be caused by some residual ljressure
in the fuel pipe line.For information concerning the bleeding of the residual
pressure, refer to GROUP 14-Service Adjustment Proce-
dures.
39. REMOVAL OF TIMING BELTRefer to
P.9-98.
47. REMOVAL OF CYLINDER HEAD ASSEMBLYUsing the special tool, loosen the bolts in the order shown
in the figure (in 2 or 3 cycles) and remove. Then remove thecylinder head assembly.A