1987 MAZDA 626 timing

2B OIL PUMP
OIL PUMP
REMOVAL
1. Disconnect the negative battery cable.
2. Drain the engine oil and coolant.
3. Remove in the sequence shown in the figure referring to the removal note for specially marked parts.
76G02B-026
6. Oil pan (Refer to page 2B—9)
7. Stiffener (RF-CX)
8. Oil strainer
9. Oil pump
Removal Note
Timing belt pulley lock bolt
Hold the timing belt pulley with the SST and remove
the lock bolt.
1. Timing belt (Refer to page 1C—11)
2. Camshaft pulley (Refer to page 1C—36)
3. Injection pump pulley (Refer to page
1C—36)
4. Seal plate
5. Timing belt pulley
2B-12

3A TROUBLESHOOTING GUIDE i
SPECIFICATIONS
^Engine model
Item ^__
FE-DOHC
FE 8-valve,
F8, F6...except
Middle East
.General
FE 12-valve
FE 8-valve F8, F6...only Middle East General

Cooling system Water cooled, forced circulation
Coolant capacity liters (US qt, Imp qt)
With heater 7.5 (7.9, 6.6) Coolant capacity liters (US qt, Imp qt) Without heater 7.0 (7.4, 6.2)
Water pump Type Centrifugal, timing belt driven Water pump
Water seal Unified seal
Thermostat
Type Wax, 2-stage Wax
Thermostat
Opening temperature °C(°F) Sub
.
83.5-86.5 (182-188) Main: 86.5-89.5 (188-193) 86.5-89.5 (188-193) 80.5-83.5 (177-182) Thermostat
Full-open temperature °C(°F) 100 (212) 95 (203)
Thermostat
Full-open lift
mm
(in) Sub: 1.5 (0.06) min.
Main: 8.0 (0.31) min. 8.5 (0.33) min.
Radiator
Type Corrugated
Radiator Cap valve opening pressure
kPa (kg/cm2, psi) 74-103 (0.75-1.05, 11-15)
Cooling
fan

Capacity
W

MTX 80
Cooling
fan

Capacity
W
ATX 120
Cooling
fan
Number
of
blade 4 Cooling
fan

Outer diameter
of
blade
mm
(in) MTX 320 (12.6)
Cooling
fan

Outer diameter
of
blade
mm
(in)
ATX 340 (13.4)

76G03A-003
TROUBLESHOOTING GUIDE
Problem Possible Cause Remedy Page
Overheating
Insufficient coolant Add 3A—
5

Coolant leakage Repair
—

Radiator fins clogged Clean 3A—
7

Radiator cap malfunction Replace 3A-
6

Cooling fan malfunction Repair 3A-12 Thermostat malfunction Replace 3 A-11
Water passage clogged Clean 3A—
5

Water
DumD
malfunction ReDair
or
replace 3A-
8
Corrosion
Impurities
in
coolant Replace 3A-
5
76G03A-004
3A—4

3A WATER PUMP
WATER PUMP
REMOVAL
1. Disconnect the negative battery cable.
2. Turn the crankshaft so that the No. 1 cylinder is at TDC of compression.
3. Drain the engine coolant.
4. Remove in the sequence shown in the figure.
1. Timing belt (Refer to Section 1B) 4. Idler pulley
2. Camshaft pulley (Refer to Section 1B) 5. Water pump
3. Seal plate 6. O-ring
3A—8

WATER PUMP 3A
SOHC
19—25 N m (1.9—2.6 m-kg, 14—19 ft-lb)
37—52 N m (3.8—5.3 m-kg, 27—38 ft-lb)
1. Timing belt (Refer to Section 1A)
2. Idler pulley
3. Water pump
4. O-ring
76G03A-007
3A-9

TROUBLESHOOTING GUIDE
3B

SPECIFICATIONS

Cooling system Water-cooled, forced circulation
Coolant capacity liters (US
qt,
Imp
qt)

With heater 9.5 (10.0, 8.4) Coolant capacity liters (US
qt,
Imp
qt)

Without heater 9.0 (9.5, 7.9)
Water pump Type Centrifugal, timing belt driven Water pump
Water seal Unified mechanical seal
Thermostat
Type Wax, two stage
Thermostat
Opening temperature °C(°F) Main Sub
Thermostat
Opening temperature °C(°F)
86.5-89.5 (188-193) 78.5—81.5 (173-179) Thermostat
Full-open temperature °C(°F) 100 (212) 100 (212)
Thermostat
Full-open lift
mm (in)
8.0 (0.31) min. 1.5 (0.06) min.
Radiator
Type Corrugated
fin

Radiator Cap valve opening pressure
kPa (kg/cm2,
psi)
74-103 (0.75-1.05, 11—15)
Cooling
fan

Type Electric
Cooling
fan

Capacity
W
120
Cooling
fan
Switching temprature orvopi OFF
- ON ^
91 (196) Cooling
fan

Number
of
blade 4
Cooling
fan

Outer diameter
mm
(in) 340 (13.4)

76G03B-003
TROUBLESHOOTING GUIDE
Problem Possible Cause Remedy Page
Overheating
Insufficient coolant Add 3B-
4

Coolant leakage Repair
—

Radiator fins clogged Clean 3B—
6

Radiator cap malfunction Replace 3B—
5

Cooling fan malfunction Repair 3B-11 Thermostat malfunction Replace 3B—
9

Water passage clogged Clean 3B—
4

Water pump malfunction ReDair
or
replace 3B—
7

Corrosion
Impurities
in
coolant Replace 3B-
4

76G03B-004
3B—3

WATER PUMP 3B
WATER PUMP
REMOVAL
1. Disconnect the negative battery cable.
2. Turn the crankshaft so that the No. 1 cylinder is at TDC of compression.
3. Drain the engine coolant.
4. Remove in the sequence shown in the figure. 69G03A-025
31—46 N m (3.2—4.7 m-kg, 23—34 ft-lb)
19—26 N-m (1.9—2.6 m-kg, 14—19 ft-lb)
(?) 8—11 N-m (80—110 cm-kg, 69—95 In-lb)
37—52 N-m (3.8—5.3 m-kg, 27—38 ft
55—65 N-m (5.6—6.6 m-kg, 41-48 ft-lb)
(80—110 cm-kg, 69—95 In-lb)
59—69 N-m (6.0—7.0 m-kg, 43—51 ft-lb)
76G03B-006
1. Timing belt (Refer to page 1C—11)
2. Camshaft pulley (Refer to page 1C—36)
3. Injection pump pulley (Refer to page
1C—36)
4. Seal plate
Note
Do not disassemble the water pump body, if a problem is found replace it as a unit.
5. Alternator
6. Water pipe
7. Water hose
8. Water pump body
9. Water pump inlet
3B-7

4A
FUEL AND EMISSION
CONTROL SYSTEMS
(CARBURETOR)
OUTLINE 4A— 2
SYSTEM DIAGRAM 4A— 2
VACUUM HOSE ROUTING
DIAGRAM 4A— 5
EMISSION COMPONENTS
LOCATION 4A— 8
COMPONENT DESCRIPTIONS 4A—12
SPECIFICATIONS 4A—15
TROUBLESHOOTING GUIDE 4A—17
PARTS INSPECTION 4A—23
AIR CLEANER ELEMENT 4A—23
ACCELERATOR LINKAGE 4A—23
INTAKE MANIFOLD 4A—23
CHOKE CABLE 4A—23
FUEL SYSTEM 4A—24
TROUBLESHOOTING 4A—25
CARBURETOR 4A—26
FUEL PUMP 4A—35
FUEL TANK 4A—36
SEPARATOR 4A—37
TWO-WAY CHECK VALVE 4A—37
THREE-WAY CHECK VALVE 4A—37
FUEL FILTER 4A—37
IDLE SPEED AND IDLE MIXTURE.. 4A—38
ADJUSTMENT 4A—38
AUTO-RETURN CHOKE SYSTEM... 4A—40
TROUBLESHOOTING 4A—40
PTC HEATER SYSTEM 4A—42
TROUBLESHOOTING 4A—42
DECELERATION CONTROL SYSTEM 4A—45
TROUBLESHOOTING 4A—45
BYPASS AIR CONTROL SYSTEM.. 4A—48
DASH POT 4A—50
ANTI-AFTERBURN VALVE 4A—50
MAIN AIR BLEED CONTROL
SYSTEM 4A—51
SLOW FUEL CUT SYSTEM 4A—53
COAST ENRICHMENT SYSTEM .... 4A—54
COASTING LEANER SYSTEM 4A—56
AIR INJECTION SYSTEM 4A—58
INTAKE AIR TEMPERATURE CONTROL
SYSTEM 4A—60
TROUBLESHOOTING 4A—60
PURGE CONTROL SYSTEM 4A—63
VACUUM SWITCH VALVE 4A—63
EXHAUST GAS RECIRCULATION
(EGR) SYSTEM 4A—64
TROUBLESHOOTING 4A—65
POSITIVE CRANKCASE VENTILATION
SYSTEM 4A—67
PCV VALVE 4A—67
IDLE-UP CONTROL SYSTEM 4A—68
TROUBLESHOOTING 4A—70
IDLE-UP SOLENOID VALVE 4A—76
EVAPORATIVE EMISSION CONTROL
SYSTEM 4A—78
TROUBLESHOOTING 4A—79
IGNITION TIMING CONTROL
SYSTEM 4A-80
TROUBLESHOOTING 4A—81
CONTROL SYSTEM 4A-83
RELATIONSHIP CHART 4A—84
ENGINE CONTROL UNIT 4A—86
INHIBITOR SWITCH 4A—93
IDLE SWITCH 4A—93
VACUUM SWITCH 4A—94
WATER THERMO SWITCH 4A—95
EXHAUST SYSTEM 4A—96
76G04A-001

4A OUTLINE
EMISSION COMPONENTS LOCATION
ECE, Hong Kong, and Singapore
Dashpot*
Reed valve
Solenoid valve*2 (Ignition timing control system)
Vacuum switch*5
Anti-afterburn valve
Choke opener
Idle-up solenoid valve^*5
or coasting leaner*6
Water thermo switch
Thermo valve*6
Water thermo switch
PTC heater*5
Air bypass solenoid valve*3
Solenoid valve*5
(Choke opener)
jr'-f
Choke breaker diaphragm
Solenoid valve*5 (Main air bleed control system)
Solenoid valve (P/S)*1
Solenoid valve (A/C)*1
Engine control unit
Fuel pump
*1 If equipped
*2 FE and F8 ATX
*3 F8 MTX and FE
*4 MTX
*5 FE and F8
*6 F6
76G04A-008
4A—8