1990 MITSUBISHI SPYDER oil temperature

ENGINE On-vehicle Service
IDLE MIXTURE CHECK
11100210081
1.Before inspection, set vehicles in the following co ndition:
lEngine coolant temperature:
l Lights, electric cooling fan and all accessories: O FF
lTransaxle: Neutral (P range on vehicles with
2.After turning the ignition switch to OFF, connect t he scan
tool to the data link connector.
3.Start the engine and run it at 2,500 for 2 minutes.
4. Set the CO, HC tester.
5. Check the CO contents and the HC contents at idl e.
Standard value:
CO contents: 0.5% or less
HC contents: 100 ppm or less
6. If the idle speed is outside the standard value, check
the following items: l Diagnostic output
l Closed-loop control (When the closed-loop control
is carried out normally, the output signal of the h eated
oxygen sensor repeats between and
,000 at idle.)
l Fuel pressure
I n j e c t o r
lIgnition coil, spark plug cable, spark plug
lEGR system and the EGR valve leak
l Evaporative emission control system
Compression pressure
NOTE
Replace the three-way catalyst whenever the CO and
HC contents do not remain inside the standard value .
(even though the result of the inspection is normal on
all items.)
COMPRESSION PRESSURE CHECK
1.Before inspection, check that the engine oil, start er and
battery are normal. Also, set the vehicle to the fo llowing
condition:
lEngine coolant temperature:
lLights, electric cooling fan and all accessories: O FF
lTransaxle: Neutral (P range on vehicle with
2. Disconnect the spark plug cables.
3. Remove all spark plugs.
4.Disconnect the relay (ASD relay) connector to prevent
a spark.
4 4
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Cylinder Head
CYLINDER HEAD GASKET
REMOVAL AND INSTALLATION
Operation
lFuel Line Pressure Releasing (Refer to GROUP On-vehicle Service.)l Engine Coolant Draining(Refer to GROUP 00 Maintenance Service.)l Engine Oil Draining(Refer to GROUP 00 Maintenance Service.)l Air Cleaner Removal
6
Post-installation Operationl Air Cleaner Installationl Engine Oil (Refer to GROU00 Maintenance Service.)l Engine Coolant Supplying(Refer to GROUP 00 Maintenance Service.)lAccelerator Cable Adjustment (Refer to GROUP
17 On-vehicle Service.)
Removal steps
1. NC compressor connector
2. Power steering pressure switch
connector3. Heated oxygen sensor connector
4. Engine coolant temperature gauge unit connector
connector6. MAP
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ENGINE OVERHAUL
Items
Engine coolant temperature sensor
Fuel and emission control parts
EGR tube
EGR valve
Intake manifold
11 8
Intake manifold air temperature sensor
Manifold absolute pressure sensor
Intake manifold
Exhaust manifold
Exhaust manifold
Camshaft and cam follower
Cvlinder head cover
Bearing head cover
No.5 12
No.1, 628 20
Cvlinder head and
valve.
7
21 . 4
231 7 :
23 17
Cylinder head bolt
Oil pan and oil pump
Oil filter
Adapter
Oil
Oil pick-up tube
Oil pump
Oil pump
Relief valve retaining cap
Long bolt87
Short bolt2820
21,
12
2 8
23
54
Oil pump cover
Piston, connecting rod and cylinder block
Connecting rod cap bolt
1 2
2720
Knock sensor 10I
SEALANTS
Engine coolant temperature sensor
switch
Camshaft bearing cap
Oil pump
Bed plate to oil pan gasket
Oil pressure switch Bed plate to cylinder block Specified sealant
Loctite 24200 or equivalent
Loctite 24200 or equivalent
Loctite 51817 or equivalent
Loctite 51817 or equivalent
Loctite 18718 or equivalent
Loctite 24200 or equivalent
Loctite 19614 or equivalent
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On-vehicle
Run the engine.
8. Set CO, HC tester.
7. Check the CO contents and the HC contents at idle.
Standard value:
CO contents: 0.5% or less
HC contents: 100 ppm or less
8. the standard value is exceeded, check the following
items:
l Diagnostic output
l Closed-loop control (When the closed-loop control
is carried out normally, the output signal of the heated
oxygen sensor and
at idle.)
l
Injector
lIgnition coil, spark plug
l system the
l Evaporative emission
Compression ,
NOTE,
Replace the three-way CO and
HC contents do not
the value.
(even though the
of the” on
all items.)
PRESSURE CHECK
1.Before inspection, check that the engine oil, start er and
battery are normal. Also, set the vehicle to the fo llowing
condition:
lEngine coolant temperature:
lLights, electric cooling fan and all accessories: O FF
lTransaxle: Neutral (P range on vehicles with
2. Disconnect the spark plug cables.
3. Remove all of the spark plugs.
4. Disconnect the crankshaft position sensor
NOTE
Doing this will prevent the engine control unit fro m carrying
out ignition and fuel injection.
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ENGINEOn-vehicle
5. Cover the spark plug hole with a shop towel etc., and
after the engine has been cranked, check that no foreign
material is adhering to the shop towel.
Caution
1.Keep away from the spark plug hole when crank-
ing.
2. If compression is measured with water, fuel,
etc., that has come from cracks inside the
these materials will become heated and gush
out from the spark plug hole, which is dangerous.
6.Set compression gauge to one of the spark plug hole s.
7. Crank the engine with the throttle valve fully open and
measure the compression pressure.
Standard (at engine speed of
1,350 (192 psi)
Limit (at engine speed of
Min. 1,020 (145 psi)
8.Measure the compression pressure for all the cylind ers,
and check that the pressure differences of the cyli nders
are below the limit.
Limit: Max. 100 (14 psi)
9. there is a cylinder with compression or a compression
difference that is outside the limit, pour a small amount
of engine oil through the spark plug hole, and repe at
the operations in steps 7 and 8.
(1) If the compression increases after oil is added , the
cause of the malfunction is a worn or damaged pisto n
ring and/or cylinder inner surface.
(2) If the compression does not rise after oil is added,
the cause is a burnt or defective valve seat, or pr essure
is leaking from the gasket.
10. Connect the crankshaft position sensor connecto r.
11. Install the spark plugs and spark plug cables.
12. Use the scan tool to erase the diagnostic troub le codes,
or disconnect the negative battery cable than
10 seconds and reconnect it.
NOTE
This will erase the diagnostic trouble code resulting from
the crankshaft position sensor connector
MANIFOLD VACUUM CHECK
1.Before inspection, set vehicles in the following co ndition:
lEn
lLig electric cooling fan, and accessories: OFF
ine coolant temperature:
lTransaxle: Neutral (P range on vehicles with
2. Set up the tachometer or connect the scan tool t o the
data link connector.
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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 OVERHAUL intake Manifold
sealant
3 mm
bead sealant
INSTALLATION SERVICE ,
S E A L A N T TO
HOUSING
Specified sealant:Mitsubishi Genuine Part No.
or equivalent
NOTE
(1) Be sure to install the housing quickly while sealant
is wet (within 15 minutes).
(2) After installation, keep the sealed area away f rom the
oil and coolant for approx. one hour.
SEALANT APPLICATION TO WATER
FITTING
S p e c i f i e d s e a l a n t :
Mitsubishi Genuine Part No.’ or equivalent
NOTE
(1) Be sure to install the housing quickly while th e sealant
is wet (within 15 minutes).
(2) After installation, keep the sealed area away f rom the
oil and coolant for approx. one hour.
SEALANT APPLICATION COOLANT
T E M P E R A T U R E S E N S O R
Specified sealant:
Nut Locking Part No. or equivalent
SEALANT APPLICATION TO ENGINE COOLANT TEMPERATURE GAUGE UNIT
Specified sealant:
ATD Part No. 8680 or equivalent
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12-4 L U B R I C A T I O N
EngineI
Turbo
4. Supply new engine oil through the oil filler.Engine oil total quantity:[including oil filter and oil cooler]
Engine (Non-turbo) arid
4 . 3 (4 q t s . )
Engine (Turbo)>
4.4
(4.6 qts.)
5. Start and run the engine a
minutes.
6.Stop the engine and check the engine oil level is w ithin
the level range indicated on the oil dipstick.
.
NOTE
may be used for operation in very cold weather
areas where the lowest ambient temperature is below
OIL REPLACEMENT
1. Remove the engine oil filler cap.
2.Remove the engine oil drain plug, and drain out the engine
o i l .
3.Remove the engine oil filter by using the oil filter wrench.
4.Clean the oil filter mounting, surface of the oil f ilter bracket.
5. Coat engine oil to the O-ring of’new filter: .
6.Screw on the oil filter by hand until it touchesthe surface
of the flange and then tighten it with. the filter wrench:
etc.
Engine (Turbo) Engine>
lFor One full turn or 14 Nm
lFor or 17 Nm (12
E n g i n e ( N o n - t u r b o ) >
lFor 090: turn or 21 Nm (15
7. Add new engine oil through the oil filter.
8. Start and run engine and check for engine oil le aks.
9. After stopping engine, check oil level and reple nish as
necessary.
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