1987 MAZDA 626 oil type

1A TROUBLESHOOTING GUIDE
SPECIFICATIONS
——Engine model
Item ^ FE 12 -valve FE 8-valve F8 F6 ——Engine model
Item ^ FE 12 -valve ECE Except ECE ECE General F6
Type Gasoline, 4 cycle
Cylinder arrangement and number In line, 4 cylinders
Combustion chamber Pentroof Multispherical
Valve system OHC, belt driven
Displacement cc (cu in) 1,998 (121.9) 1,789 (109.1) 1,587 (96.8)
Bore and stroke mm (in) 86.0 x 86.0 (3.39 x 3.39) 86.0 x 77.0 (3.39 x 3.03) 81.0 x 77.0 (3.19 x 3.03)
Compression ratio 9.5 : 1 8.6 : 1 9.0 : 1
Compression pressure kPa (kg/cm2, psi)—rpm
Standard 1,422 (14.5,
206)—280 1,275 (13.0, 185)—270 1,128 (11.5, 164)—270 Compression pressure kPa (kg/cm2, psi)—rpm Minimum 996 (10.2,
144)—280 893 (9.1, 129)—270 790 (8.1, 114)—270
Valve timing
IN Open BTDC 14° 16° 20° 20° 17° 17°
Valve timing
IN Close ABDC 56° 54° 65° 65° 56° 56° Valve timing
EX Open BBDC 69° 54° 65° 65° 64° 64° Valve timing
EX Close ATDC 13° 16° 20° 20° 15° 15°
Valve clearance mm (in)
IN 0; Mainte-nance-free 0.30 (0.012)
Valve clearance mm (in)
EX 0; Mainte-nance-free 0.30 (0.012)
Idle speed rpm
MTX 800 _+5S ... carb., 850 ± 50 ... Fl
Idle speed rpm ATX 900 _+5g ... carb., 850 ± 50 ... Fl 950 _+5§ carb. 850 ±
50
.Fl
Ignition timing BTDC 6° ± 1°
Firing order
1
-3-4-2
76G01A-003
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
1A-49
1A-57

1
A—20
Malfunction of fuel system Refer to Section 4
Malfunction of electrical system Refer to Section 5
Poor idling Malfunction of engine-related components Malfunction of HLA Improper valve clearance Poor valve to valve seat contact Failed cylinder head gasket
Replace Adjust Repair or replace Replace

1
A—75 1A-10 1 A—51
1
A—20
Malfunction of fuel system Refer to Section 4
Excessive oil
consumption
Oil working up Worn piston ring groove or sticking piston ring Worn piston or cylinder Replace Replace or repair

1
A—57 1A—57
Oil working down
Worn valve seal
Worn valve stem or guide Replace
Replace
1A—26
1A—49
Oil leakage Refer to Section 2A
76G01A-004
1A—4

ON-VEHICLE MAINTENANCE (CYLINDER HEAD) 1 A
76G01A-035
Engine harness connector
Install the engine harness connectors.
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.
1. IG coil
2. Engine ground
3. Water tempera-
ture sensor
4. Water thermo
switch
5. Oxygen sensor
(Fl)
6. Injection harness
(Fl)
7. F/l solenoid
valve (Fl)
8. Throttle sensor
(Fl)
76G01A-113
Steps After Installation
1. Fill the radiator with the specified amount and type
of coolant.
2. Perform the necessary engine adjustments. (Re-
fer to TUNE-UP PROCEDURE.)

1
A—25

1 A ON-VEHICLE MAINTENANCE (VALVE SEAL)
Valve clearance (8-valve)
Adjust the valve clearance. (Refer to page
1
A—10.)
Cylinder head cover
1. Apply silicon sealant to the shaded areas shown
in the figure.
2. Install the cylinder head cover.
Tightening torque:
6—8 N-m (60—80 cm-kg, 52—69 in-lb)
76G01A-116
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.
76G01A-035
Steps After Installation
1. Fill the radiator with the specified amount and type
of coolant.
2. Perform the necessary engine adjustments. (Re-
fer to TUNE-UP PROCEDURE.)
86U01X-055
1A—33

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

ON-VEHICLE MAINTENANCE (CYLINDER HEAD) 1 B
Distributor
1. Apply engine oil to the O-ring, and position it on
the distributor.
2. Apply engine oil to the blade.
3. Install the distributor.
4. Loosely tighten the distributor mounting bolt.
76G01A-035
Engine harness connector
Install the engine harness connectors.
1. IG coil
2. Heat gauge unit
3. Speed sensor
4. P/S switch
5. Engine ground
6. Water tempera-
ture sensor
7. Water thermo
switch
8. Crank angle
sensor
9. Oxygen sensor
10. Linear solenoid
11. Solenoid valve
(idle speed
control)
12. Throttle position
sensor
13. Injection harness
76G01B-035
Steps After Installation
1. Fill the radiator with the specified amount and type
of coolant.
2. Perform the necessary engine adjustments. (Re-
fer to TUNE-UP PROCEDURE.)
86U01X-041
1B-21

INSTALLATION 1B
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.
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
1B-81

TROUBLESHOOTING GUIDE 1 C
SPECIFICATIONS
———Engine model
Item ^—_______ RF-CX RF-N
Type Diesel, 4 cycle
Cylinder arrangement and number In line, 4 cylinders
Combustion chamber Swirl chamber
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 21.1 : 1 22.7 : 1
Compression pressure
kPa (kg/cm2, psi)-rpm
Standard 2.943 (30, 427)-200 Compression pressure
kPa (kg/cm2, psi)-rpm Minimum 2.649 (27, 384)-200
Valve timing
IN Open BTDC 13° 13°
Valve timing
IN Close ABDC 15° 39° Valve timing
EX Open BBDC 60° 60° Valve timing
EX Close ATDC 8° 8°
Valve clearance mm (in)
Cold IN 0.25 (0.010)
Valve clearance mm (in)
Cold EX 0.35 (0.014) Valve clearance mm (in) Warm (for ref.)
IN 0.30 (0.012) Valve clearance mm (in) Warm (for ref.) EX 0.40 (0.016)
Idle speed (MTX in neutral) rpm 720
Injection timing ATDC 10 TDC 0°
Injection order 1_3_4_2
76G01C-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
1C-48 1C—55,56 1C-16
Difficult starting
Malfunction of fuel system Refer to Section 4D
Difficult starting
Malfunction of Comprex supercharger Refer to Section 4D
Difficult starting
Malfunction of electrical system Refer to Section 5
Poor idling Malfunction of engine-related components Improper valve clearance Poor valve to valve seat contact Failed cylinder head gasket
Adjust Repair or replace Replace
1C-85 1C-50 1C—16
Poor idling
Malfunction of fuel system Refer to Section 4D
Poor idling
Malfunction of Comprex supercharger Refer to Section 4D
Excessive oil consumption
Oil working up Worn piston ring groove or sticking piston ring Worn piston or cylinder
Replace Replace or repair
1C-57 1C—55,56
Excessive oil consumption
Oil working down Worn valve seal Worn valve stem or guide
Replace Replace
1C-24 1C-48
Excessive oil consumption
Oil leakage Refer to Section 2B
76G01C-003
1C—3