1990 MITSUBISHI SPYDER sensor

ENGINE On-vehicle
Caution
1.Keep away from the spark plug hole when crank-
ing.
2. If compression is measured with water, oil, fuel,
etc., that has come from cracks inside the cylinder ,
these materials will become heated and will 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 o pen and
measure the compression pressure.
Standard value (at engine speed of
1,250 (178 psi)
Limit (at engine speed of
min. 935 (133 psi)
8.Measure the compression pressure for all the cylind ers,
and check that the pressure differences of the cylinders
are below the limit.
Limit:. max. 100
(14 psi)
9.If there’ is a cylinder with compression or a compr ession
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
(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
(2) If the compression does not rise after oil is added,
the cause is a burnt or defective valve seat,
is leaking from the gasket.
10. Connect the crankshaft position sensor
11. Install the spark plugs and spark plug cables.
12. Use the scan tool to erase the diagnostic
codes,
or disconnect the negative battery cable’ for
than
10 seconds and reconnect it.
NOTE
This will erase the diagnostic trouble code from
the crankshaft position sensor connector being disc on-
nected.
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ENGINE Engine Assembly
4.9
29
8. Accelerator cable connection9. air control motor connector
10. Knock sensor connector 11. Heated oxygen sensor connector
12. Engine coolant temperature gauge
unit connector13. Engine coolant temperature sensorconnector
Engine oil
00005320
‘ c o i l c o n n e c t o r ’ 20. Camshaft position sensor connector
21. Crankshaft position sensor
connector22. Air conditioning compressor
connector23. Control wiring harness 24. Brake booster vacuum hose .
14. Ignition power transistor connector
15. Throttle position sensor connector
16. Capacitor connector 17. Manifold differential pressure sensor connector
18. Injector connectors connection
25. High-pressure fuel hose connection
26. Fuel return hose connection
27. Water hose A connection
28. Water hose
connection29. Vacuum hoses connection
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ENGINECamshaft and Camshaft ‘Oil -Seal
Removal steps
1. Accelerator cable connection2.Center cover
3. Spark plug cable
4.Breather hose5.PCV6.Rocker cover7. Timing belt (Refer to 8.Cover9.Gasket10. Camshaft position sensing cylinder 11. Camshaft position sensor support
12. Exhaust camshaft sprocket
13. Intake camshaft sprocket
14. Front camshaft bearing cap
15.Camshaft bearing cap
16. Rear camshaft bearing cap (R.H.)
17. Rear camshaft bearing cap (L.H.)
18.Exhaust camshaft19.Intake camshaft20. Camshaft oil seal21.Semi-circular packing
Installation steps. .
19. Intake camshaft 18. Exhaust camshaft Rear cap (R.H.)
16. Rear bearing cap (L.H.)
15. bearing cap 14. bearing cap
20. Camshaft 13. Intake camshaft12. Exhaust 11. Camshaft
Cover
7. Timing belt (Refer to
21. Semi-circular packing”
6. Rocker cover hose
4. Breather hose
3. Spark plug, cable2. Center cover 1. Accelerator cable .
Service.)
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ENGINECamshaft and Oil Seal
CAMSHAFT CAP
C A M S H A F T
BEARING CAP
INSTALLATION
Tighten the bearing cap installation bolts to the torque
in two or three steps.
C a u t i o n
Tighten uniformly, otherwise the rocker arms not
straight.
Camshaft position
Camshaft positionsensor paint
CAMSHAFT OIL SEAL INSTALLATION
Use the special tool to drive the camshaft oil seal into position
carefully.
CAMSHAFT POSITION SENSING CYLINDER/
CAMSHAFT POSITION SENSOR SUPPORT
INSTALLATION
(1) Install the camshaft position sensing cylinder to the end
of the camshaft as shown in the illustration.
(2) Install the camshaft position sensor support.
(3)Check that the identification paint on the
sensing cylinder is pointing in the same direction as the,
camshaft position sensor installation direction when
camshaft is at the No. 1 compression TDC position.
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ENGINE Cylinder Head
CYLINDER HEAD GASKET
REMOVAL AND INSTALLATION
Pre-removal Operationl Fuel Line Inner Pressure Release(Refer to GROUP On-vehiclel Engine Coolant Draining(Refer to GROUP 00 Maintenance Service.)l Engine Oil Draining(Refer to GROUP 00 Maintenance Service.)
3.62.9 Nm
2.2
4.9 Nm
220 1
Removal steps
1. Accelerator cable connection(Refer to GROUP 17 On-vehicleService.)2. Air hose 3. Idle air control motor connector
4. Knock sensor connector
5. Heated oxygen sensor connector
6. Engine coolant temperature gauge
unit connector
7. Engine coolant temperature sensor
connector8. Ignition power transistor connector
9. Throttle position sensor connector
10. Capacitor connector
11. Manifold differential pressure sensor connector
12. Injector connectors
13. Ignition coil connector Engine oil
,
21
14. position sensor connector
15. Crankshaft sensor
16. Air conditioning compressor
c o n n e c t o r
17. Control wiring harness
18. Center cover
19. Spark
cable
20. Brake booster
21. High-pressure fuel hose connection 22. Fuel return hose connection
23. By-pass valve hose connection
24. Water hose connection25. Vacuum hoses connection26.Breather hose 27. PCV hose connection
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ENGINE OVERHAUL General Information
GENERAL INFORMATION
GENERAL SPECIFICATIONS
Descriptions
Number of cylinders
Combustion chamber
Total displacement
. . .Specifications
“in-line DOHC
4
type
1,997 (121.9)
Cylinder bore mm (in.)
Piston stroke mm (in.)
(3.35)
88.0 (3.46)
Compression ratio 8.5
Valve, timingIntake valve
Opens (BTDC)2 1 ”
Exhaust valve Closes (ABDC)
51
Opens (BBDC)
57”
‘Closes (ATDC)
Lubrication system Pressure feed, full-flow filtrationI
Oil pump type
Cooling system
Water pump type EGR type
I
Involute gear type
Water-cooled . .
Centrifugal impeller type
Single type,
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Injector type and number
Injector identification number
Fuel regulated pressure
(psi)
4
,
(42.7) .
Throttle bore mm (in.)
Throttle position sensor Closed throttle position switch 54 (2.13)
Variable resistor type
Contact type

ENGINE OVERHAUL
TORQUE SPECIFICATIONS
, ,
I
I I
I
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I
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Items
Generator and ignition system
W a t e r p u l l e y b o l tpump
Generator mounting bolt
Generator brace bolt
Generator pivot nut
Crankshaft pulley bolt
Spark plug
Ignition coil bolt
Center cover bolt Ignition power transistor bolt
Plate
Camshaft position sensor
Camshaft position sensor support
Camshaft position sensing cylinder
Timing belt
Crankshaft position sensor bolt
Tensioner pulley bolt
Tensioner arm bolt
Auto tensioner bolt Idler pulley bolt
Oil sprocket nutpump
Crankshaft bolt
Tensioner
bolt
Counterbalance shaft sprocket bolt
Camshaft sprocket bolt
Engine support bracket bolt
Fuel and emission parts
EGR valve bolt
Throttle body stay bolt
Throttle body bolt
Fuel pressure regulator bolt
Intake manifold
manifold bolt
ntake manifold nut ntake manifold stay bolt
ntake manifold plenum bolt and nut
ntake manifold plenum stay bolt
outlet fitting bolt
coolant temperature gauge unit
coolant temperature sensor
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N m
118”
23 17
2417
1410
25 18
25 18
1410
32
1410
107
97
14 10
2216
97
4935
22 16
24
‘17’
3827
5540
12087
1914
4633
9065
45 33
22 16
19 14
1914
97
2014
3626
2820
18
1813
1914
118
30 22

ENGINE OVERHAUL
items
Piston and connecting rod
Connecting rod cap nut
Crankshaft, flywheel and drive plate
Flywheel bolt
Drive plate bolt
Oil seal case bolt
Rear plate bolt
housing cover bolt
cap bolt
Knock sensor
Bracket
Left and right engine support bracket bolt
Front roll stopper bracket bolt
Rear roll stopper bracket bolt
Front engine support bracket bolt
Exhaust pipe support bracket bolt
N m
20 turns 14.5 turns
1359 8
135 98
118
118
97
25 turns18 turns
231 6
453 3
65 47
120 87
60 43
36
SEALANT
Items Specified sealantI
Camshaft position sensor support Mitsubishi Genuine Part No. or equivalent
Rocker cover
Semi-circular packing
Enaine
bracket bolt
ATD Part No. 8660 or equivalent
ATD Part No. 8660 or equivalent
ATD Part No. 8660 or eauivalent
Oil pan Mitsubishi Genuine Part No. or equivalentI
Water outlet fitting
Engine coolant temperature gauge unit
Engine coolant temperature sensor
Oil pressure switch Mitsubishi Genuine Part No. or equivalent
ATD Part No. 8660 or equivalent
Nut Locking Part No. 4171 or equivalent
ATD Part No. 8660 or equivalent
Oil pressure gauge unit
ATD Part No. 8660 or equivalent
Rear oil seal case
Mitsubishi Genuine Part No. or equivalent
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