1987 MAZDA 626 engine oil

1 A ASSEMBLY (CYLINDER HEAD)
Camshaft
1. Apply a liberal amount of engine oil to the journals
and bearings.
2. Place the camshaft in position with the dowel pin
facing straight up.
Rocker Arm and Shaft Assembly
1. Assemble the rocker arm and shaft assembly as
shown in the figure.
2. Apply silicon sealant to the shaded areas shown
in the figure.
3. Apply liberal amount of clean engine oil to the cam
lobes and journals.
5. Install the rocker arm and shaft assembly. Tighten
the bolts in two or three steps in the order shown
in the figure.
Tightening torque:
18—26 Nm (1.8—2.7 m-kg, 13—20 ft-lb)
76G01A-081
76G01A-082
1A—80

ASSEMBLY (CYLINDER HEAD) 1 A
Front Housing
1. Apply engine oil to the front housing and a new
oil seal.
2. Press the oil seal into the front housing.
86U01X-155
3. Apply engine oil to the oil seal lip.
4. Install the front housing and a new gasket.
Tightening torque:
19—25 Nm (1.9—2.6 m-kg, 14—19 ft-lb)
86U01X-156
Rear Housing
Install the rear housing and a new gasket.
Tightening torque:
19—25 Nm (1.9—2.6 m-kg, 14—19 ft-lb)
86U01X-157
1A—81

ASSEMBLY (AUXILIARY PARTS) 1 A
76G01A-087
76G01A-088
86U01X-167
Oil Pressure Switch
Install the oil pressure switch.
Tightening torque: 12—18 N-m
(1.2—1.8 m-kg, 104—156 in-lb)
Oil Cooler (8-valve...only ECE, 12-valve)
Install the oil cooler.
Tightening torque:
29—39 N-m (3.0—4.0 m-kg, 22—29 ft-lb)
Oil Filter
1. Apply engine oil to the rubber gasket of the new
filter.
2. Install the oil filter, and tighten it by hand only. Do
not use a wrench.
Intake Manifold Assembly
1. Place the new gasket in position.
2. Install the intake manifold assembly.
3. Tighten the nuts in two or three steps.
Tightening torque:
19—30 N-m (1.9—3.1 m-kg, 14—22 ft-lb)
Intake Manifold Bracket (Fl)
Install the intake manifold bracket.
Tightening torque:
19—30 N-m (1.9—3.1 m-kg, 14—22 ft-lb)

76G01A-092

1A—87

1 A ASSEMBLY (AUXILIARY PARTS)
86U01X-169
86U01X-219
76G01A-035
Thermostat and Thermostat Cover
1. Install the thermostat into the cylinder head with
the jiggle pin at the top.
2. Position a new gasket with the printed side facing
the cylinder head.
3. Install the thermostat cover.
Tightening torque:
19—30 Nm (1.9—3.1 m-kg, 14—22 ft-lb)
Spark Plug
1. Apply anti-seize compound or molybdenum-based
lubricant to the spark plug threads.
2. Install the spark plugs.
Tightening torque:
15—23 Nm (1.5—2.3 m-kg, 11—17 ft-lb)
Distributor
1. Apply engine oil to the O-ring, and position it on
the distributor.
2. Apply engine oil to the blade or gear.
3. Align the mating marks as shown in the figure
...8-valve.
4. Install the distributor with the marks facing straight
up.
5. Loosely tighten the distributor mounting bolt.
High-Tension Lead
Install the high-tension leads.
Engine Mount Bracket
Install the engine mount.
Tightening torque:
85—117 Nm (8.7—11.9 m-kg, 63—86 ft-lb)

86U01X-178

1A—88

ASSEMBLY (AUXILIARY PARTS) 1 A
86U01X-171
76G01A-090
76G01A-091
Alternator
1. Install the alternator strap and bracket.
Tightening torque:
37—63 Nm (3.8—6.4 m-kg, 27—46 ft-lb)
2. Install the alternator.
Tightening torque
(A): 31—46 Nm
(3.2—4.7 m-kg, 23—34 ft-lb)
(§): 37—52 N-m
(3.8—5.3 m-kg, 27—38 ft-lb)
3. Install the alternator drive belt, and adjust the belt
deflection. (Refer to page 1A—7.)
Coolant Inlet Pipe and Bypass Pipe
1. Install the coolant inlet pipe.
Tightening torque:
19—25 N-m (1.9—2.6 m-kg, 14—19 ft-lb)
2. Apply vegetable oil to the O-ring.
3. Install the coolant bypass pipe.
Tightening torque:
37—63
N
m (3.8—6.4 m-kg, 27—46 ft-lb)
Engine Hanger
Install the front and rear engine hangers.
Tightening torque:
19—30 N-m (1.9—3.1 m-kg, 14—22 ft-lb)
76G01A-092
1A—89

INSTALLATION 1A
Connector Location
Install each harness as shown in the figure.
1. IG coil
2. Engine ground
3. Water temperature sensor
4. P/S switch
5. Oxygen sensor (Fl)
6. Water thermo switch
7. Injection harness (Fl)
8. F/l solenoid (Fl)
76G01A-146
9. Throttle position sensor (Fl)
10. Alternator
11. Oil pressure switch
12. Starter
13. P.T.C. heater (carb.)
14. Solenoid valve (Slow cot) (carb.)
15. Solenoid valve (carb.)
16. Transmission harness
1A—97

INSTALLATION 1A
76G01A-099
76G01A-100
Air Cleaner Assembly
1. Install the air cleaner assembly.
Tightening torque:
16—27
N
m (1.6—2.8 m-kg, 12—20 ft-lb)
2. Connect the air flow sensor connector and air in-
take pipe (Fl).
Engine Oil
Add the specified amount and type of engine oil. (Re-
fer to Section 2A.)
Coolant
Close the drain plug, fill the radiator and reservoir tank
with the specified amount and type of coolant. (Re-
fer to Section 3A.)
Check Engine Condition
1. Check for leaks.
2. Perform engine adjustments if necessary.
3. Perform a road test.
4. Recheck the oil and coolant levels.
86U01X-204
1A—99

TROUBLESHOOTING GUIDE 1 B
SPECIFICATIONS
Engine model FE DOHC
Item Leaded fuel Unleaded fuel
Type Gasoline, 4 cycle
Cylinder arrangement and number In line, 4 cylinders
Combustion chamber Pentroof
Valve system OHC, belt driven
Displacement cc (cu in) 1,998 (121.9)
Bore and stroke mm (in) 86.0 x 86.0 (3.39 x 3.39)
Compression ratio 10.0 : 1 9.2 : 1
Compression pressure Standard 1,422 (14.5, 206)—290 1,373 (14.0, 199)—310
kPa (kg/cm2, psi)-rpm Minimum 996 (10.2, 144)—290 961 (9.8, 139)—310
IN Open BTDC 10° 10°
Valve timing
IN Close ABDC 60° 55° Valve timing
EX Open BBDC 60° 55° EX Close ATDC 10° 10°
Valve clearance mm (in) IN 0; Maintenance-free Valve clearance mm (in) EX 0; Maintenance-free
Idle speed rpm 750 ± 50
Ignition timing BTDC 12° ± 1°
Firing order 1—3--4-2
76G01B-002
TROUBLESHOOTING GUIDE
Problem Possible Cause Remedy Page
Difficult starting Malfunction of engine-related components
Burned valve
Worn piston, piston ring, or cylinder
Failed cylinder head gasket
Replace
Replace or repair Replace
1B—35 1B—43 1B—16
Malfunction of fuel system Refer to Section 4C
Malfunction of electrical system Refer to Section 5
Poor Idling Malfunction of engine-related components Malfunction of HLA
Poor valve to valve seat contact
Failed cylinder head gasket
Replace
Repair or replace
Replace
1B—60 1B—37 1B—16
Malfunction of fuel system Refer to Section 4C
Excessive oil
consumption Oil working up Worn piston ring groove or sticking piston ring Worn piston or cylinder
Replace
Replace or repair
1B-43 1B-43
Oil working down
Worn valve seal
Worn valve stem or guide
Replace
Replace 1B-35
Oil leakage Refer to Section 2A
76G01B-003
1B—3