fuel pressure MITSUBISHI GALANT 1989 Service Repair Manual

00-30GENERAL - Master Troubleshooting
EXCESSIVE OIL CONSUMPTION Symptom Probable cause Reference page or remedy
1
r-Excessive 011 consumption
Oil leak Repair as necessary.I Valve
stem seal worn or damaged. Repair as necessary.
Valve stem worn. Repair as necessary.
Piston ring worn or damaged. Repair as necessary.
POOR FUEL MILEAGE Symptom
Poor fuel mtleage
Probable cause
Fuel leak
Air cleaner clogged. Ignition system problems.
Fuel injection system problems.
Compression too low.
Tires improperly inflated.
Clutch slips.Brakes drag. Reference page or remedy
Repair as necessary.
-
16-32
13-8, 119, 205
1 l-6
31-3 21-4
35-l 3
NOISE
SymptomNoise Probable cause
Loose bolts and nuts.
Engine noise Reference page or remedy
Retighten as necessary.
Repair as necessary.
HARD STEERING
Symptom
Hard steering Probable cause
Reference page or remedy
Loose power steering oil pump belt
37A-21
Low fluid level Replenish
Air in power steering system
37A-22
Low tire pressure31-3
Excessive turning resistance of lower arm ball33A-11
joint Excessively tightened of steering gear box 37A-33
rack support cover
Improper front wheel alignment
Excessive turning resistance of tie-rod ball
joint
Malfunctioning electronic controlled power
steering system
Sticky flow control valve
Bent rack in steering gear box
J
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33A-5
37A-15, 33 37A-9
37A-50,
51 37A-42

II-4ENGINE - Specifications
TORQUE SPECIFICATIONS Items
Nm ft.lbs.
Engine mount insulator nut (large)
60-8043-58
Engrne mount insulator nut (small)30-4022-29
Engine mount bracket nut and bolt
50-6536-47
Front roll stopper insulator nut
50-6536-47
Front roll stopper bracket to center member
40-5029-36
Rear roll stopper insulator nut
40-5029-36
Rear roll stopper bracket to crossmember
40-5029-36
Transaxle mount insulator nut
60-8043-58
Transaxle mount bracket to body
40-5029-36
Fuel high pressure hose to fuel rail 4-
6
3-4
Accelerator cable adjusting bolt 4-63-4
Front exhaust pipe clamp bolt
30-4022-29
Front exhaust pipe to exhaust manifold
40- 5029-36
Power steering oil pump to bracket 35-4525-33
Air conditioning compressor to bracket 23-27
17-20
Oil pan drain plug35-4526-33
Oilpan6-
8
4-6
Oil screen 15-2211-16
Timing belt cover
IO-127-
9
Cylinder head bolt (Cold engine)
90- 10065-72
Camshaft sprocket
80-10058-72
dater pump pulley bolt8-106-
7
Crankshaft pulley bolt
20-3014-22
Crankshaft sprocket bolt
110-13080-94
Timrng belt B tensioner bolt 15-2211-16
Tension pulley bracket bolt 23-2717-20
Right silent shaft sprocket bolt34-40”’ [43-49]*’ 25-29” [31-351”
Oil sprocket nut pump
50-6036-43
Control wiring harness and intake manifold plenum or air intake manifold\
4-
6
3-4
Front roll stopper bracket bolt 55-75
40-54
Front engine support bracket bolt50-7036-51
Exhaust pipe support bracket bolt
30-4222-30
Left engine support bracket bolt30-4222-30
Rear roll stopper bracket bolt110-13080-94
Front case bolt20-2714-20
Bear cover bolt 5-
7
4-5
Iistributor nutIO-137-
9
Rocker arm and shaft assembly bolt (large) 19-2114-15
?ocker arm and shaft assembly bolt (small)20-2714-20
ntake manifold stay bolt
18-2513-18
-iming belt tensioner spacer and bolt
43-5531-40
NOTE*I: When a 2.0 mm (.08 in.) thick washer is used.~2: When a 2.6 mm (.I0 in.) thick washer is used.
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II-8ENGINE - Service Adjustment Procedures
8 VALVE
W Tlmlng belt side
il6
16
727
(3) If any abnormal noise IS not eliminated by racing, check the
lash adjuster.
@ Stop the engine.
@ Set the engine so that cylinder No. 1 is positioned at
the top dead centre of the compression.
@ Press the rocker arm at the area indicated by the+ arrow mark to check whether the rocker arm is lowered
or not.
@ Slowly turn the crankshaft 360 degrees clockwise.
@ In the same procedure as Step 0, check the rocker
arm at the area indicated by the
0 arrow mark.
@ If the rocker arm lowers easily when the part directly
above the rocker arm lash adjuster is pressed, the lash
adjuster is defective and must be replaced. When re-
placing the lash adjuster, bleed the air from all adjus-
ters and then assemble them. Then inspect with proce-
dures
@ to 0, and confirm that there are no abnormal-
ities
NOTE
lThe lash adjuster can be accurately checked for de-
fects with the leak down test.
l Refer to the engine service manual for the leak down test and lash adjuster air bleeding procedure.
If the rocker arm is extremely hard when pressed
down, the lash adjuster is normal, so look for a different
cause of abnormal sound.
COMPRESSION PRESSURE CHECK
MllFFAL
(1) Before inspection, verify that the engine oil, starter motor and battery are normal. Then, perform the following.
l Engine coolant temperature:
80- 95°C
(176- 203°F)
l Lights, electric cooling fan and accessories: OFF
l Transaxle:
P range
0 Steering wheel: Neutral position
(2) Disconnect the spark plug cable.
(3) Remove all the spark plugs
(4) Disconnect the connector of the distributor.
NOTE
This will prevent the engine control module from controll- ing the ignition and fuel injection.
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ENGINE - Service Adjustment Procedures 11-9
(5) Cover the spark plug holes with a cloth, etc., and crank the engine. Then verify that no foreign material sticks to the
cloth, etc.
Caution
1. During cranking, be especially careful of the spark plug
installing hole.
2.Very hot water, oil, fuel, etc., which may have entered
the cylinder somehow, will violently spout through the spark plug hole if the compression is measured in the
entrapped state. This is very dangerous.
MANIFOILD VACUUM INSPECTIONMllFNAC
(6)
(7)
(8)
Set up the compression gauge in the spark plug mounting
hole.
Fully open the throttle valve, and cranking the engine,
measure the compression pressure.
Standard value:
<8VALVE>1,250 kPa (178 psi) [250-400 rpm]
< 1 Ei VALVE>
1,300 kPa (185 psi) [250-400 rpm]
Limit:
(8 VALVE>880 kPa (125 psi) [250-400 rpm]
980 kPa (139 psi)
[250-400 rpm]
Measure the compression pressure of each cylinder, and
verify that the pressure difference among the cylinders is
less than the limit value.
Limit: max. 100
kPa (14 psi)
(9) If a cylinder’s compression pressure or pressure difference IS outside
the limit, fill a small amount of engine oil through
the spark plug hole and repeat Items (7) and (8) above.
@ If the compression is increased when the oil is filled, the piston and/or cylinder wall may be worn or
damaged.
@ If the compression is not increased even though the oil is filled, the valve may be thermally seized, the valve
contact may be improper or pressure may leak at the
gasket.
(10) Connect the connector of the distributor.
(11) Install the spark plug and spark plug cable.
(12)Erase the diagnostic trouble code with the Scan tool or re-
connect the battery (-)
cable
10 seconds or more after it
was disconnected.
NOTE
This will erase the memory of the diagnostic trouble code
which
resu,lted from disconnection of the distributor con-
nector.
(1) Before inspection and adjustment, put the vehicle into the
followin~g state.
l Engine coolant temperature:
85-95°C (185-203°F)
l
Ligt-Its, electric, cooling fan, and accessories: OFF
l Transaxle: Neutral
(N or P for vehicles with an automa-
tic transaxle)
l Steering wheel: Neutral position
(2) Check that the idling revolution speed is normal.
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II-IOENGINE - Service Adjustment Procedures
(3) Remove the PCV hose from the PCV valve and attach a
vacuum gauge.
(4) Check that the negative pressure at the intake manifold
during idle revolution is normal.
Standard value:
(8 VALVE>Approx. 500 mmHg (20 in.Hg)
<16VALVE>Approx. 510 mmHg (20 in.Hg)
(5) If outside the standard value, isolate the cause by referring
to the following table and repair the fault.
Symptom
CauseRemed
y
l The vacuum gauge reading is less than l Ignition timing is retarded.l Adjust the ignition timing.
standard value, but the pointer is
stable.
l The vacuum gauge pointer swings l The gas mixture is excessivelyl Check
Multiport Fuel Injection
slowly.rich.system.
l The vacuum gauge pointer drops irre-
l The gas mixture is excessively
l Check
Multiport Fuel Injectiongularly.lean.system.
l The vacuum gauge pointer drops inter-
0 Incomplete close contact of in-0 Check and repair the valve.mittently to 30 to 160
mmHg
(1.2 to take and exhaust valve seats.
6.3 in.Hg).
l The vacuum gauge pointer drops sud-l Broken cylinder head gasketl ,Replace cylinder head gasket. denly
from the normal reading to 250 mmHg
(9.8 in.Hg). then returns to
normal.
/ OlR0175
condition.
Timina mark
‘timing mark._*-
Camshaft sprocket TIMING BELT TENSION ADJUSTMENT
(8 VALVE>MllFGCEa
There are 2 access holes in the timing belt front lower cover.
These can be used to readjust the tension of the timing belt by
the following procedure without removing the timing belt front lower cover. However, timing belt “B”, which drives the right
silent shaft, cannot be adjusted unless the cover is removed. (1) Turn the steering wheel all the way to the left.
(2) Remove the left side undercover panel.
NOTE
This work is done so that the crankshaft can be turned.
(3) Place a piece of wood against the engine oil pan and jac
k
up.(4) Remove the engine mounting bracket.
(5) Remove the timging belt front upper cover.
(6) Remove the four spark plugs.
(7) Turn the crankshaft clockwise and check the timing belt
(8) Turn the crankshaft clockwise and align the timing marks.
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II-14ENGINE - Ennine AssemblvENGINE
ASSEMBLY

(8 VALVE>
REMOVAL AND INSTALLATION
Pre-removal Operationl Eliminating fuel pressure in fuel line
(Refer to GROUP 13-On-Vehicle Inspection
of MFI Components.)
*Removal of the Hood (Refer to GROUP
42-Hood.)*Draining of the Coolant
(Refer to GROUP OO-Maintenance Service.)
*Removal of the Transaxle Assembly
(Refer to GROUP 22,
23-Transaxle.)*Removal of the Radiator(Refer to GROUP 14-Radiator.)
I IPost-installation Operation*Installation of the Radiator
(Refer to GROUP 14-Radiator.)*Installation of the Transaxle Assembly (Refer to GROUP 22, 23-Transaxle.)*Refilling of the Coolant(Refer to GROUP 00-Maintenance Servic
l Installation of the Hood
(Refer to GROUP
42-Hood.)
:e.) :1989
models>
-6
Nm-4 ft.lbs./
4-6 Nm3-4 ft.lbs.
cl990 models>
128
3-4 ftlbs. MllSA-A
<1991,1992 models>
1-6 Nm5-4 ft.lbs.
1-6 Nm1-4 ft.lbs.\
OlAO625
\,,OlA0647
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ENGINE - Engine Assembly11-15
35-4

5
25-33 35-45 Nm
25-33
ft.lbs.
24
35-45 N
m
25-33
ft.lbs.
23-2
7
250166309
I23
:l;nbs.
50-65 Nm
36-47 ft.lbs.
dv--iu wm: ’22-29 ft.lbs. \ d.(,(I3L i‘9
50-65 Nm*Cb36-47 ft.lbs.* -
Removal steps
1. Connection for accelerator cable(Refer to GROUP
13-Service Adjustment
Procedures.)
2. Connection for heater hose
3. Connection for brake booster vacuum
hose
4. Connection for fuel high pressure hose 5. O-ring
6. Connection for fuel return hose
7. Connection for vacuum hose
8. Connection for oxygen sensor
9. Connection for engine coolant temperature gauge unit
10. Connection for engine coolant
temperature sensor
11. Connection for
ISC12. Connection for injector13. Connection for EGR temperature sensor (California vehicles only)
14. Connection for ignition power transistor
15. Connection for condenser
16. Connection for TPS
17. Connection for idle speed control motor
position sensor
18. Connection for distributor
30-40 Nm
\22-29 ft.lbs.
bO-50 Nm29- 36 ft.lbs.
19. Connection for crankshaft position sensor
20. Connection for ground cable
21. Control wiring harness
22. Connection for generator
23. Connection for oil pressure switch
dae I)* 24. Power steering oil pump 27. Gasket
28. Clamp of pressure hose (Power steering) and high pressure hose (Air conditioning)
29. Engine mount bracket
30. Self locking nut
,** *+ 31. Engine assembly
IdOTEf-or tightening locations indicated by the * symbol. firsttighten temporarily, and then make the final tightenrng wrth?he entire werght of the engine applied to the vehicle body.
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ENGINE -- Engine Assembly
ENGINE ASSEMBLY
REMOVAL AND INSTALLATION
II-17
Pre-removal Operation@Eliminating Fuel Pressure in Fuel Line (Refer to GROUP 13-Service Adjustment Proce-
dures.)
l Removal of the Hood
(Refer to GROUP
42-Hood.)l Draining of the Engine Coolant
(Refer to GROUP 00-Maintenance Service)
l Removal of the Transaxle (Refer to GROUP
22,23-Transaxle.)l Removal of the Radiator(Refer to GROUP 14-Radiator.)
Fuel rail
603AOO70
Engine oil
Post-installation Operationl Installation of the Radiator (Refer to GROUP 14-Radiator.)l Installation of the Transaxle(Refer to GROUP 22, 23-Transaxle.)l Refilling of the Engine Coolant
(Refer to GROUP 00-Maintenance Service.)
l Installation of the Hood (Refer to GROUP
42-Hood.)
4-6 Nm3-F ft.lbs.
I6m
Removal steps
1. Vacuum hose connection
2. Brake booster vacuum hose connection
3. Heater hose connection (cylinder head
-heater unit)
4. Heater hose connection (Heater unit +water inlet pipe)
5. Fuel high pressure hose connection
6. O-ring
7. Fuel return hose connection
8. Accelerator cable connection
9. Engine coolant temperature gauge unit connector
OlA0676 10. Engine coolant temperature sensor
connector
II. Oxyqen
sensor connector
12. Distributor connector
13. Condenser
connector
14. TPS connector
15.
IAC connector
16. Injector connector
17. Air conditioning compressor connector
18. Control harness
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Cyl1n&r’ ;;(oozhead
Sealant: 3M
ATD Part No.8660
or equivalent 5-7
Nm4-5 ft.lbs 90-100

Nm65-72 ftlbs.
40-50 Nm /29 - 36 ft.lbs.
30-40 Nm22- 29
ftlbs.
Removal steps
I. Air intake hose
2. Connection for accelerator cable or
throttle cable (Refer to GROUP
13-Service Adjustment Procedures.)+e +a 3. Connection for fuel high pressure hos
e
4. O-ring
+e l + 5. Connection for radiator upper hose
6. Connection for water by-pass hose
7. Connection for heater hose
8. Connection for brake booster vacuum
hose
9.
Connectron for fuel return hos
e
10. Connection for vacuum hose 11. P.C.V. hose
12. Connection for spark plug cable
13. Connection for oxygen sensor
14. Connection for engine coolant temperature gauge unit
15. Connection for engine coolant
temperature sensor
16. Connection for
ISC17. Connection for injector
olAo314
l *
18. Connection for EGR temperature sensor (California vehicles only)
19. Connection for ignition power transistor
20. Connection for condenser
21. Connection for TPS
22. Connection for
ISC motor position sensor
23. Connection for distributor
24. Connection for crankshaft position sensor
25. Connection for ground cable
26. Control wiring harness
27. Clamp for pressure hose (Power steering)and high pressure hose (Air conditioning)
28. Engine mounting bracket
29. Rocker cover
30. Semi-circular packing
31. Timing belt front upper cover
32. Camshaft sprocket 33. Self-locking nuts
34. Gasket
+e ++ 35. Cylinder head assembl
y
l + 36. Cylinder head gasket
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ENGINE - Cylinder Head Gasket11-27
\
r
MatingC
-I
1
J-1.‘T
:-c’ 000510020
SERVICE POINTS OF REMOVALMllJBAl
3. DISCONNECTION OF FUEL HIGH PRESSURE HOSE
Caution
Cover the hose connection with rags to prevent splash
of fuel that could be caused by some residual pressure
in the fuel pipe line.
For information concerning the bleeding of the residual
pressure, refer to GROUP
13-On-Vehicle Inspection of
MFI
Components.
5. REMOVAL OF RADIATOR UPPER HOSE Make mating marks on the radiator hose and hose clamp,
and then disconnect the radiator hose.
28. REMOVAL OF ENGINE MOUNTING BRACKET
Jack up the vehicle after placing a wooden block between the jack and the engine’s oil pan.
Caution
Jack up carefully, so as not to apply an excessive
load to the various parts.
Remove the engine mount bracket.
32. REMOVAL OF CAMSHAFT SPROCKET
(1) Rotate the crankshaft and align the timing mark.
(2) Remove the camshaft sprocket (with the timing belt attached), and place on the timing belt front lower cover.
Caution
After removing the camshaft sprocket, be sure not
to rotate the crankshaft.
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