check oil MITSUBISHI ECLIPSE 1991 Owner's Guide

COOLING - Water Pump <1.8L Engine>749SERVICE POINTS OF REMOVAL
NO’IMCAG
2. REMOVAL OF ENGINE MOUNT BRACKET
(1) Place a wooden block at the oil pan part of the engine, andthen jack up the vehicle.
Caution
Jack up carefully, so as not to apply a load to each part.(2) Remove the engine mount bracket.
\
\
Core wireAdhesive
rubber
Rib rubber1 coo21
5. REMOVAL OF DRIVE BELTBefore removing the V-ribbed belt, loosen the water pump
pulley installation bolt.
13. REMOVAL OF ROCKER COVER/16. TIMING BELT
FRONT UPPER COVER/ 18. TIMING BELT
For information concerning the removal of the rocker cover,the timing belt front upper cover, and the timing belt, refer
to GROUP
g-Timing Belt.
22. REMOVAL OF TIMING BELT BFor information concerning the removal of the timing belt
B, refer to GROUP g-Timing Belt B.
INSPECTIONN07MDAL
V-RIBBED BELTCheck following items and replace if faulty.
l Check belt surface for damage, peeling or cracks.
l Check belt surface for oil or grease.
l Check belt rubber for wear or brittleness.
l Check the pulleys for cracks or damage.
WATER PUMP
lCheck each part for cracks, damage or wear, and replace
the water pump assembly if necessary.
l Check the bearing for damage, abnormal noise and
sluggish rotation, and replace the water pump assembly if
necessary.lCheck the seal unit for leaks, and replace the water pump
assembly if necessary.
lCheck for water leakage. If water leaks from hole “A”, seal
unit is leaking. Replace as an assembly.

7-20COOLING - Water Pump <1.8L Engine>
aWater pump*<
l-----r,//
O-ringWater
pipe
04ROO24Identification
mark04lJoo25Alternater
brace
404uoo22
J
SERVICE POINTS OF INSTALLATIONN07ME40a
26. INSTALLATION OF O-RINGsInsert the O-ring to the water inlet pipe, and coat the,buter
circumference of the O-ring with water.,
By coating with water, the insertion to the water pump will
become easier.
Caution
1.Care must be taken not to permit engine oil or other
greases to adhere to the O-ring.
2.When inserting the pipe, check to be sure,that there
is no sand, dirt, etc. on its inner surface.
24. INSTALLATION OF WATER PUMP,
(1) Clean both gasket surfaces of water pump body and
cylinder block.
(2) Install new water pump gasket and water pump
assembly and tighten the bolts.
Bolt diameter (d)Torque
x length (e) mm (in.)Nm (ftlbs.)I
I I148 x 28 (.31 x 1.1)112-15 (9-10) 1
I I2
71 8 x 70 (.31 x 2.76) 120-27 (15-19)(
348x55(.31x2.17)12-15(9-10)
448x28(.31x1.1)I
22. INSTALLATION OF TIMING BELT B/20. FLANGE-For information concerning the installation of the timing
belt
B and the flange, refer to GROUP g-Timing Belt B.
18. INSTALLATION OF TIMING BELT/l7. TIMING BELT
FRONT LOWER COVER/lG. TIMING BELT FRONT UP-
PERCOVER/ 15. SEMI-CIRCULARPACKING / 13.
ROCKER COVERFor information concerning the installation of the timing
belt, the timing belt front lower cover, the timing belt front
upper cover, the semi-circular packing, and the rocker
cover, refer to GROUP
g-Timing Belt.
5. DRIVE BELT TENSION ADJUSTMENT
Refer to
P.7-9.
4. DRIVE BELT TENSION ADJUSTMENT
Refer to GROUP
19-Service Adjustment Procedures.
3. DRIVEBELTTENSIONADJUSTMENT
Refer to GROUP
24-Service Adjustment Procedures,

COOLING - Water Pump <2.0L DOHC Engine>7-2’3
12. REMOVAL OF AUTOMATIC TENSIONERI14. TIMING
BELTFor information concerning removal of the automatic
tensioner and the timing belt, refer to GROUP
g-Timing
Belt.
18. REMOVAL OF TIMING BELT BFor information concerning the removal of timing belt
6,refer to GROUP
g-Timing Belt B.Quality
canvas
\
\
Core wireAdhesive
rubber
Rib rubberlCOO2I
MRM2.
INSPECTION
V-RIBBED BELT
No7mDA.lCheck following items and replace if faulty.
l Check belt surface for damage, peeling or cracks.
l Check belt surface for oil or grease.
l Check belt rubber for wear or brittleness.
‘0 Check the pulleys for cracks or damage.
WATER PUMP
lCheck each part for cracks, damage or wear, and replace
the water pump assembly if necessary.
l Check the bearing for damage, abnormal noise and
sluggish rotation, and replace the water pump assembly if
necessary.
lCheck the seal unit for leaks, and replace the water pump
assembly if necessary.
l Check for water leakage.
SERVICE POINTS OF INSTALLATION
N07MEAN
22. INSTALLATION OF O-RING
Insert the O-ring to the water inlet pipe, and coat the outer
circumference of the O-ring with water.
By coating with water, the insertion to the water pump will
become easier.
Caution
1. Care must be taken not to permit engine oil or other
greases to adhere to the O-ring.
2. When inserting the pipe, check to be sure that there
is no sand, dirt, etc. on its inner surface.

COOLING- Water Hose and Water Pipe <2.0L DOHC Engine (Turbo)>7-330140552
Mating marks
04A0090
rMating marks
04A0090
SERVICE POINTS OF REMOVALNO7lBAC311. DISCONNECTION OF POWER STEERING OIL PUMP
Disconnect the oil pump with hoses from the bracket.
NOTEThe removed power steering oil pump should be fastened
(by using rope, etc.) in a position that will not interfere with
the removal/installation of the engine assembly.
27. REMOVAL OF TURBOCHARGER ASSEMBLY
Remove the turbocharger assembly with the exhaust
fitting, water pipe A, water pipe
B and the oil pipe attached
to it.
38. DISCONNECTION OF RADIATOR LOWER HOSE
After making mating marks on the radiator hose and the
hose clamp, disconnect the radiator hose.
INSPECTIONN07lCAAa3WATER PIPE AND HOSE INSPECTION
Check the water pipe and hose for cracks, damage, clog and
replace them if necessary.
SERVICE POINTS OF INSTALLATION
N071DAJ345. INSTALLATION OF
0-RING/44. WATER INLET PIPE
Insert the O-ring to the water inlet pipe, and coat the outer
circumference of the O-ring with water.
By coating with water, the insertion to the water pump will
become easier.
Caution
Care must be taken not to permit engine oil or other
greases to adhere to the O-ring.
38. CONNECTION OF RADIATOR LOWER HOSE
Align the mating marks on the radiator hose and hose
clamp and then connect them; then, applying force in the
direction indicated by the arrow in the illustration, seat the
clamp to the trace marks of the previous connection.
Caution
Be sure to install the hose clamps at the trace marks ofthe previous connection.

COOLINGEngine Coolant Temperature Gauge Unit, Engine Coolant- TemDerature Sensor and Enaine Coolant Temperature Switch7-35
.---
Sensor04GO033
0400032
1c0010
INSPECTIONNomDM3ENGINE COOLANT TEMPERATURE GAUGE UNIT
Raise the water temperature and measure the resistance if
within the standard value.
Standard value:
104213.5 52 [at 70°C (158OF)lENGINE COOLANT TEMPERATURE SENSOR
(Engine control)
Raise the water temperature and measure the resistance if
within the standard value.
Standard value:
At
20°C (68°F)2.45 + 0.24 k&
At
80°C (176°F)296f32 8ENGINE COOLANT TEMPERATURE SWITCH
(Air conditioner)
(1) Immerse the engine coolant temperature switch in oil and
then heat (by using a gas stove flame or similar method) soas to increase the oil temperature.
(2) Check to be sure that the engine coolant temperature
switch is switched OFF when the oil temperature reaches
the standard value.
Standard value:
112-l 18°C (234-244°F)Caution
The oil used above should be engine oil and should be
stirred well while being heated; do not heat more than
necessary.SERVICE POINTS OF INSTALLATION
NO7OEAU3. ENGINE COOLANT TEMPERATURE
SWITCHI2.ENGINE COOLANT TEMPERATURE SENSOR/l. EN-
GINE COOLANT TEMPERATURE GAUGE UNIT
Apply sealant to threaded portion and tighten.
Specified sealant: MOPAR Part No.4318034 or equiva-
lent

ENGINE - Troubleshooting9-23
--Symptom
Compression too lowProbable cause
Cylinder head gasket blown
Piston ring worn or damage
Piston or cylinder wornRemedy
Replace gasket
Replace rings
Repair or replace piston and/or cylinder
block
Valve seat worn or damageRepair or replace valve and/or seat ring
Oil pressure dropEngine oil level too lowCheck engine oil level
Oil pressure switch faultyReplace oil pressure switch
Oil filter cloggedInstall new filter
Oil pump gears or cover wornReplace gears and/or cover
Thin or diluted engine oilChange engine oil to correct viscosity
Oil relief valve stuck (opened)Repair relief valve
Excessive bearing clearanceReplace bearings
Oil pressure too highOil relief valve stuck (closed)Repair relief valve
Noisy valvesIncorrect lash adjusterBleed air or replace lash adjuster
Thin or diluted engine oil (low oil pressure)Change engine oil
Valve stem or valve guide worn or damageReplace valve and/or guide
Connecting rod noise/Insufficient oil supplyCheck engine oil level
main bearing noise
Low oil pressureRefer to “Oil pressure drop”
Thin or diluted engine oilChange engine oil
Excessive bearing clearanceReplace bearings
Timing belt noiseIncorrect belt tensionAdjust belt tension
Excessive engine rollingLoose engine roll stopper (Front, Rear)Retighten
and vibration
Loose transaxle mount bracket
Loose engine mount bracket
Loose center member
Broken transaxle mount insulatorReplace
Broken engine mount insulator
Broken engine roll stopper insulator

9-24ENGINE - Service Adjustment Procedures
ENGINE 4.8L Engine>
SERVICE ADJUSTMENT PROCEDURES -
CHECKING COMPRESSION PRESSURENOSFFAI
(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. 920
kPa (130 psi) [250-400 rpm]
(8) Perform 6 and 7 above for all the cylinders, ensuring that
compression pressure differential for each of the cylinders
/Iis 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).
0If 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.
/y
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