MITSUBISHI SPYDER 1990 Service Repair Manual

ENGINE On-vehicle Service’
Highpressurechamber
3.Attach a three-way joint to the vacuum hose connected
between the intake manifold plenum and the fuel pressure
solenoid valve and connect a vacuum gauge.
4.Start the engine, and check that the curb idle speed is
within the standard value range.
Standard 750 100
5, Check the manifold vacuum.
Limit: Min. 60 (16
LASH ADJUSTER CHECK
NOTE
If an abnormal noise (rattling noise) probably caus ed by the
lash adjusters is heard and the noise does not check
as follows.
1. Check the engine oil, and if required, refuel
it.
NOTE
lIf the amount of the engine oil is insufficient, air will
be sucked in from the oil strainer and mix in the o il
passage.
lIf the amount of the engine oil is more the
specified amount, it will be stirred by the cranksh aft
to make a lot of air mix in the oil.
lIf the oil is deteriorated, it will not easily
from air and the amount of air mixed in the oil will
increase.
If the air which has mixed in the oil due to the ab ove
causes enters the high-pressure chamber in the lash
adjusters, the air in the high-pressure chamber wil l be
pressurized during opening of the valve, which caus es
the lash adjusters to shrink excessively, and an abnormal
noise will be generated when the valve is closed. This
is the same phenomenon as the one when the valve
clearance has been excessively adjusted by mistake. In
this case, if the air which has entered the lash ad justers
isbled, things will be normalized.
2.Start the engine and perform gentle racing? several times
(less than times.)
If the abnormal noise stops by racing, the air is b led
from the high pressure chamber of the lash adjuster s
and the function of the lash adjusters is normalize d.
l :After raising the engine speed from idling to 3,000
gradually (in 30 seconds), drop the speed
gradually (in 30 seconds) to idling.
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ENGINE On-vehicle
NOTE
lIf the vehicle is parked on a slope for long, oil
in the lash adjusters will
and ‘air may
enter the high-pressure’ chamber when the vehicle
i s s t a r t e d .
lAfter the vehicle is parked for long, air may enter the high-pressure
because, the oil in the
oil passage will be gone it take a time before
the oil is supplied to the
3.If an abnormal noise does not stop by racing, check the
lash adjusters according to the following procedure s.
Stop the enaine.
of the engine to the compression
top dead center.
(3) Push the rocker arm indicated by the white arrow
mark as shown in the illustration at left and check
whether or not the arm lock goes down.
(4) Turn slowly the crankshaft
clockwise.
(5) Check the rocker arm indicated by the black arr ow
mark as shown in the illustration at left same as above
(3).(6) If the rocker arm can be lowered easily when th e
part of the rocker arm which is directly above the
top of the lash adjuster is pressed, the lash adjus ter
is defective and should be replaced with a new part .
Furthermore, when replacing the lash adjuster, blee d
all of the air from the lash adjuster and then install.
After this, check that there is no problem by check ing
in steps to (5).
NOTE
lA leak-down test can be carried out to accurately
determine whether the lash adjuster is defective
or not.
lFor the procedures for the leak-down test and
air bleeding of the lash adjuster, refer to 11
Furthermore, if the arm feels extremely stiff
and cannot be lowered when it is
the lash
adjuster is normal, so some other cause
of the abnormality.
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Engine Assembly11
ENGINE ASSEMBLY
REMOVAL AND INSTALLATION
Pm-removal Operationl Fuel Line Pressure Releasing(Refer to GROUP On-vehicle Service.)l Hood Removall Engine Coolant Draining(Refer to GROUP 00 Maintenance l Transaxle Assembly Removal Refer to GROUP Assembly.) Refer to GROUP Transaxle Assembly.)lRadiator Removal (Refer to GROUP 14 -Radiator.)l Under Cover Removal(Refer to GROUP 42 Under Cover.)
1
22Nm16
6
28Nm
Post-installation Operationl Radiator Installation(Refer to GROUP 14 Radiator.)l Transaxle Assembly Installation Refer to GROUP Transaxle Assembly.) Refer to GROUP -Transaxle Assembly.)l Engine Coolant Supplying(Refer to GROUP 00 Maintenance Service.)l Hood Installationl Accelerator Cable Adjustment (Refer to GROUP 17 On-vehicle Service.)l Under Cover Installation(Refer to GROUP 42 Under Cover.)l Drive Belt Tension Adjustment 28Nm21
21 Nm
Removal steps
1. Power steering pressure switch
connector
2. Generator connectors
3. Oil pressure switch connector
4. Oil pressure gauge unit connector
5 . G e n e r a t o r(Refer GROUP 16 Generator.)
6. Power
pump Connection
7. A/C compressor connection
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.
4 . 9 N m
\ / X L - -3.6
. .
8. Accelerator cable connection9. air control motor connector
10. Heated oxygen sensor connector
11. Engine coolant temperature gauge
unit connector
12. Engine coolant temperature sensorconnector13. Ignition power transistor connector
14. Throttle position sensor connector
Capacitor connector16. Manifold differential pressure
20. Crankshaft position sensor
connector21. Air conditioning compressor
connector22. Evaporative emission purge sole-
noid valve
23. Control wiring harness
24. Brake booster vacuum hose
connection High-pressure fuel connection
26. Fuel return hose connection --
. .. .
17.18.
sensor connector
Injector connectors
Ignition coil connector
19. Camshaft position sensor connector 27.
water nose A 28. Water hose connection29. Vacuum hoses connection
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Engine
67Nm49
Nm
28
30. Front exhaust pipe connection
31. Gasket
32. Engine mount bracket assembly 33. Engine assembly
,

REMOVAL SERVICE POINTS
POWER STEERING PUMP REMOVAL
power steering pump from the bracket with the
hose attached.
NOTE
Place the removed power steering pump in a place wh ere
will not be a hindrance when removing and installing the
engine assembly, and tie it with a cord.
A/C COMPRESSOR REMOVAL
Disconnect the compressor connector and remove the
compressor from the compressor bracket with the hos e still
a t t a c h e d .
NOTE:
Place the removed A/C compressor in a place where i t will
not be
hindrance when removing and installing the engine
assembly, and tie it with a cord.
Do not bend the joint between hose and the A/C
pipe
force.
E N G I N E A S S E M B L Y
REMOVAL,
(1) Support the a garage
(2) Remove the special tool which was attached when the
transaxle assembly removed.
(3) Hold the engine with a chain block or similar
(4) Place a garage jack against the engine oil pan with a
piece of wood in, between, jack up the engine so th at
the weight of
is no longer being applied to
the engine mount bracket assembly, and then remove
the engine mount bracket assembly.
ENGINE ASSEMBLY REMOVAL
After checking that all cables, hoses and harness c onnectors,
etc., are disconnected from the engine, lift the chain block
slowly to remove the engine assembly upward from th e engine
compartment.
,
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Engine Assembly
I N S T A L L A T I O N
ENGINE INSTALLATION
Install the engine while checking
hoses, and harness connectors are not clamped.
MOUNT BRACKET ASSEMBLY
I N S T A L L A T I O N
(1) Place a garage jack against the engine oil pan a
piece of wood in between, and install the engine mo unt
bracket assembly while adjusting the position of th e
en-
gine.
(2) Support the engine with the garage jack.
(3)Remove the chain block and support the engine assem bly
with the special tool.
Engine sideEngine
Arro
Engine
mount
bracket(4) Align the notches on the stopper with the engin e mount
bracket with the arrow facing toward the shown
direction. Then install the stopper.
assembly
HIGH-PRESSURE FUEL HOSE CONNECTION
When connecting the high-pressure fuel hose to the fuel rail,
apply a small amount of clean engine oil to the hos e union
and then insert, being careful not to damage the O-ring.
Caution
Do not let engine oil get the fuel
.
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11ENGINE Crankshaft
CRANKSHAFT PULLEY
REMOVAL AND INSTALLATION
Pre-removal’ Operationl Under Cover Removal(Referto GROUP 42 Under (Refer to GROUP 42 Under Cover.)
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Removal steps
1. Drive belt (Generator)
2. Drive belt (Power steering)
3. Drive belt (NC)
4. Crankshaft pulley

and Camshaft Seal
CAMSHAFT AND CAMSHAFT OIL SEAL
REMOVAL AND INSTALLATION
Pm-removal Operationl Battery RemovalPost-installationl Battery Installationl Engine Adjustment
7-9
Sealant:
MITSUBISHI GENUINE PART
or equivalent
Removal steps
1. Accelerator cable connection . . . . . .2. Air Intake nose3. Connection for breather hose
4. Connection for PCV hose
5. Spark plug cable
6. Rocker cover7. Camshaft position sensor support
8. Camshaft position sensing cylinder
2216
2.9
00005324
Engine oil
,
01
9. Timing belt upper cover 10. Camshaft 11. Camshaft oil seal 12. and shaft side) Rocker and (Exhaust ‘side)
14. Camshaft
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11ENGINE and Camshaft Oil ‘Seat
REMOVAL SERVICE
sprocket
Camshaft sprocket
SPROCKET ,
(1) Rotate the crankshaft (right) direction and
align the timing marks.
cylinder the compression
stroke top dead center position.)
Caution
The crankshaft must always be rotated in the forward
direction only.
(2) Tie the camshaft sprocket and timing belt with a cord
so that the position of the camshaft sprocket will not move
with respect to the timing belt.
(3)
the special tool to remove the camshaft sprocket
with the timing belt attached.
Caution
After removing the camshaft sprocket, be sure
to rotate the crankshaft.
,
ARM AND ASSEMBLY
REMOVAL.
Before removing the rocker arm assembly, install
the special tools as shown in the
that the lash
adjusters will not fall out.
,
INSTALLATION SERVICE
ARM AND SHAFT ASSEMBLY
INSTALLATION
(1) Temporarily tighten the rocker shaft with the b olt so that
all rocker arms on the inlet valve ‘bide do not push the
valves.
(2) Fit the rocker shaft spring from the and position
it so that it is right angles to the
guide.
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