engine MAZDA 626 1987 User Guide

0
1
o
interval
Procedure & Item
Number of Months or km, whichever corns first
©1 ©2 ©3 ©4 Service data and inspection point Page
interval
Procedure & Item
Months — 6 12 18 24 30 36 42 48 ©1 ©2 ©3 ©4 Service data and inspection point Page
interval
Procedure & Item
x
1000 Km
1 10 20 30 40 50 60 70 80 ©1 ©2 ©3 ©4 Service data and inspection point Page
interval
Procedure & Item
Miles x 1000
0.6 6 12 18 24 30 36 42 48
©1 ©2 ©3 ©4 Service data and inspection point Page
Clutch pedal I I I I I I I I O o o o
• Operation
• Pedal height: 216.5—221.5 mm (8.524—8.720 in)
• Free play: 5—13 mm (0.20—0.51 in)
6-4
Brake pedal I I I I I I I I O o o o
• Operation • Pedal height: 222—227 mm (8.74—8.94 in)
• Free play: 4—7 mm (0.16—0.28 in)
11-11
11—11
Parking brake A A A A o o o o
• Operation • Lever stroke: 5—7 notches
11-65
Power brake unit and hoses I I I I o o o o
• Operation • Check the vacuum hoses and connectors
11—27
Brake fluid *5 I I I R I I I R 0 o o o • Fluid level 11—6
Clutch fluid I I I I I I I I o o o 0 • Fluid level 6-4
Power steering fluid I I I I I I I I o o o o • Fluid level 10—11
Power steering system and hoses I I I I 0 o o 0 • Fluid leakage or oozing 10—13
Air cleaner element *3 I R I R o o o o —
1 A—6 1B—5 1C-5
Cooling system (including coolant level adjustment) I I I I o o o o • Hoses for cracks or wear • Coolant level
3A—5
3B-4
Engine coolant Replace every 2 years 0 o 0 0 — 3A-5 3B—4
a> a o o X o o

Interval
Procedure & item
Number of Months or km, whichever corns first
Months

x
1000
Km
Miles x 1000
0.6
6
10
12
20
12
18
30
18
24
40
24
30
50
30
36
60
36
42
70
42
48
80
48
®3 ©4 Service data and inspection point Page
m z >
z o m
H >
00 I-m
m o m
c 3 a to Qt (0 O
A
Battery electrolyte level and specific gravity O o o o Electroyte level Specific gravity 5-8
Drive belts O O o o Cracks or damage Tension

1
A—7
1B-6
1C-7
Engine timing belts Replace Severy 100,000 Km O O o o
Engine valve clearance
Intake and exhaust manifold nuts and bolts
O
O
o o
Valve clearance: FE-8-valve (Hot engine) IN: 0.30 mm (0.012 in) EX: 0.30 mm (0.012 in) FE (DOHC)
IN: 0; Maintenance free EX: 0; Maintenance free RF-CX, RF-N (Cold engine) IN: 0.25 mm (0.010 in) EX: 0.35 mm (0.014 in)
O IN EX
FE FE DOHC 19-30(1.9-3.1,
14-22)
22-28 (2.2-2.9
16-21)
1A—14 1B—11 1C-11

1
A—10
1C-85
Retighten the intake and exhaust manifold nuts
N-m (m-kg, ft-lb)
1A—86
1B—68 CO 0 1 m o
m a
H m
o m
Engine oil O
Oil filter O
O o o
Oil pan capacity FE: 3.6 liters
(3.8 US qt, 3.17 Imp qt) RF-CX, RF-N: 5.0 liters (5.3 US qt, 4.4 Imp qt)
O o o
Oil filter capacity FE 8-valve
0.3 liters (0.32 US qt, 0.26 Imp qt) FE (DOHC)
0.2 liters (0.21 US qt, 0.18 Imp qt) RF-CX, RF-N
0.4 liters (0.42 US qt, 0.35 Imp qt)
2A-6
2B-6
2A-6
2B-6

For General
Chart symbols:
I : Inspect: Visual examination and/or functional measurement of a system's operation or performance.
A : Adjust: Examination resuiting in adjustment or replacement.
R : Replace or change
T : Tighten
O : Applicable
X : Not applicable
© 1 : F6, F8 engine with carburetor, MTX, ATX
© 2 : FE engine with carbretor, MTX, ATX
©3 : FE DOHC engine with fuel injection, MTX
® 4 : RF-N engine with MTX
NOTE:
As the result of visual examination or functional measurement of a system's operation(performance), correct, clean or replace as required.
REMARKS:
After 80,000 km (48,000 Miles) or 48 months, continue to follow the described maintenance items and intervals periodically.
As for * marked items in this maintenance chart, please pay attention to the following points.
*1. If the vehicle is operated under the following conditions, it is suggested that the engine oil and oil filter be changed more often than at usual recommended
intervals.
a) Driving in dusty conditions.
b) Extended periods of idling or low speed operation.
c) Driving for a prolonged period in cold temperatures or driving only short distances regularly.
"2. Replacement of the timing belt is required at every 100,000 km (60,000 Miles). Failure to repace the timing belt may result in damage to the engine.
*3 If the vehicle is operated in very dusty or sandy areas, inspect and, if necessary, replace more often than at usual recommended intervals.
*4 Adjust or inspect alternator and water pump drive belt, and power steering and air conditioner drive belt, vacuum pump belt, super charger belt if equipped.
*5 Replace every two years.
If there has been continuous hard driving, mountain driving, or if the brakes are used extensively or the vehicle is operated in extremely humid climates, the
brake fluid should be changed annually.
*6. Only F6 carbretor for Singapore (MTX Model)
Emission Control and Related Systems
The ignition and fuel systems are vitally important to the proper operation of the emissions control and related systems, as well as for efficient engine operation. It i
strongly recommended that all servicing related to these systems be done by your Authorized Mazda Dealer.
o CJ1

Interval
Procedure & item
Number of Months or km, whichever corns first
©1 ©2 ©3 ©4 Service data and inspection point Page
Interval
Procedure & item
Months — 6 12 18 24 30 36 42 48 ©1 ©2 ©3 ©4 Service data and inspection point Page
Interval
Procedure & item

x
1000
Km
1 10 20 30 40 50 60 70 80 ©1 ©2 ©3 ©4 Service data and inspection point Page
Interval
Procedure & item
Miles x
1000 0.6 6 12 18 24 30 36 42 48
©1 ©2 ©3 ©4 Service data and inspection point Page
Choke system I I I I O O X X
• Carburetor linkage • Choke diaphragm • Choke valve clearance • Unloader system
4A—26
4A-34
4A-34
4A—33
Cooling system I I I I O O o o • Hoses for cracks or wear 3A-5 3B—4
Engine coolant (with reservoir) Reprace every 24 months O O o o • Coolant level 3 A—5 3B—4
Battery electrolyte level and specific gravity I I I I O o o o • Electrolyte level • Specific gravity 5—8
Engine timing belts *2 Replace every 100,000 km O o o o —
1A—14 1B—11 1C—11
Drive belts *4 A I I I I I I I I O o o o • Cracks or damage • Tension
1A—7
1
B—6 1C—7
Engine valve clearance
(1) For Gasoline engine (I) I (I) I (I) I (I) I
T
O o X o
• Valve clearance F6, F8, FE-8-valve (Hot engine) IN: 0.30 mm (0.012 in) EX: 0.30 mm (0.012 in) FE-12-valve, FE (DOHC) IN: 0; Maintenance free EX: 0; Maintenance free RF-N (Cold engine) IN: 0.25 mm (0.01 in) EX: 0.35 mm (0.014 in)
1A—10
1C—85
Exhaust manifold nuts and bolts T T
I
T o o X X
• Retighten the intake and exhaust manifold nuts
N-m (m-kg, ft-lb) 1A—86 1B—68 1C—89 Exhaust manifold nuts and bolts T T
I
T o o X X IN EX 1A—86 1B—68 1C—89 Exhaust manifold nuts and bolts T T
I
T o o X X
F6, F8, FE 19-30 (1.9-3.1, 14-22) 22-28 (2.2-2.9, 16-21)
1A—86 1B—68 1C—89 Exhaust manifold nuts and bolts T T
I
T o o X X
RF-N 16-23 (1.6-2.3,
12-17) 22-26 (2.2-2 7,
16-20)
1A—86 1B—68 1C—89
Engine oil *1 Replace every 5000 km or 6 months X X o o
• Oil pan capacity FE DOHC: 3.6 liters
(3.8 US qt, 3.2 Imp qt) RF-N: 5.0 liters
(5.3 US pt, 4.4 Imp qt)
2A-6
2B—6
m >
o m
H >
00 r~ m
a 2

Interval
Procedure & item
Number of Months or km, whichever corns first
Months
x 1000 Km
Miles x 1000
Engine oil
Oil filter
Fuel filter (R) only for carbretor
Fuel lines and hoses (I) only for Diesel
Spark plugs
Initial ignition timing
Idle speed (I) only for carbretor
0.6
(I)
6
10
(0
12
20
12
(R)
18
30
18
(I)
24
40
24
30
50
30
(I)
36
60
36
(R)
42
70
42
(I)
48
80
48
®1
O
o
o
o
o
o
o
©2
O
o
o
o
o
o
o
©3
O
o
o
o
o
o
©4
O
o
o
Service data and inspection point
Oil pan capacity F6, F8, FE 3.6 liters (3.8 US qt, 3.2 Imp qt)
Oil filter capacity F8, FE 12-valve (SOHC)
0.3 liters (0.32 US qt, 0.26 Imp qt)
FE (DOHC) 0.2 liters (0.21 US qt, 0.18 Imp qt) RF-N
0.4 liters (0.42 US qt, 0.35 Imp qt)
Fittings, connections and compo-
nents for leaks
Plug gap FE DOHC 0.7—0.8 mm (0.028-0.031 in) Others 0.75—0.85 mm (0.030—0.033 in) Recommended spark plugs
F6,F8,FE FE
12 VALVE,
DOHC
NGK BPR 5ES BPR 6ES BCPR 5E
BCPR 6E
Nippon
Denso W16EXR-U
W20EXR-U
Q16PR-U* Q20PR-U
Initial ignition timing F6 F8 FE (8 VALVE) (12 VALVE)
6 ±
1
° BTDC FE (DOHC) 12 ± 1° BTDC
Check the idle speed
MTX 80015? rpm
ATX F6 900 rpm (in "N" range) ATX F8, FE 900 t5? rpm (in "N" range)
FE DOHC 700—800 rpm
§ *Only FE 12 VALVE
Page
2A—6
2A-6
2B-6
4D—21
5-9
5-11
4A—38
4C-29
m z >
z o m
H >
CD I-m
T1
o
o (A O X m o c i-m o
m z >
z o m

ENGINE
(SOHC)
OUTLINE 1A— 2
STRUCTURAL VIEW 1A— 2
SPECIFICATIONS 1A— 4
TROUBLESHOOTING GUIDE 1A— 4
TUNE-UP PROCEDURE 1A— 6
ON-VEHICLE INSPECTION 1A-13
COMPRESSION 1A—13
ON-VEHICLE MAINTENANCE 1A—14
TIMING BELT 1A—14
CYLINDER HEAD 1A—20
VALVE SEAL 1A—26
REMOVAL 1A—34
DISASSEMBLY 1A—36
AUXILIARY PARTS 1A—36
TIMING BELT 1A—38
CYLINDER HEAD 1A—40
CYLINDER BLOCK 1A—44
INSPECTION AND REPAIR 1A—48
ASSEMBLY 1A—62
CYLINDER BLOCK 1A—62
CYLINDER HEAD 1A—73
TIMING BELT 1A—82
AUXILIARY PARTS 1A—86
INSTALLATION 1A—91
TRANSAXLE ASSEMBLY 1A—91
ENGINE INSTALLATION 1A—92
76G01A-001

1A OUTLINE
OUTLINE
The new 626 is equipped with F-series gasoline engine and R-series diesel engine. (R-series diesel
engine — explained in section 1C.) F-series engine has following variations.
1. SOHC model
(1) 12-valve model 2.0 £ = FE engine
(2) 8-valve model 1.6 I = F6 engine
1.8 £ = F8 engine
2.0 £ = FE engine
2. DOHC model (explained in section 1B)
2.0 £ 16-valve = FE DOHC engine
STRUCTURAL VIEW
1A—2

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

TROUBLESHOOTING GUIDE 1 A
Problem Possible Cause Remedy Page
Insufficient power Insufficient compression Malfunction of HLA Improper valve clearance Compression leakage from valve seat Seized valve stem Weak or broken valve spring Failed cylinder head gasket Cracked or distorted cylinder head Sticking, damaged, or worn piston ring Cracked or worn piston
Replace
Adjust
Repair
Replace Replace Replace Replace Replace Replace
1A—75 1A—10
1
A—51 1A—49 1A—53
1
A—20 1A—48 1A—57
1
A—57
Malfunction of fuel system Refer to Section 4
Others Slipping clutch Dragging brakes Wrong size tires
Refer to Section 6 Refer to Section 11 Refer to Section 12
Abnormal
combustion
Malfunction of engine-related components Malfunction of HLA
Improper valve clearance Sticking or burned valve
Weak or broken valve spring Carbon accumulation in combustion chamber
Replace Adjust Replace Replace
Eliminate carbon

1
A—75 1A—10 1A—49 1A—53
Malfunction of fuel system Refer to Section 4
Engine noise Crankshaft or bearing related parts
Excessive main bearing oil clearance Main bearing seized or heat-damaged Excessive crankshaft end play Excessive connecting rod bearing oil clearance Connecting rod bearing seized or heat-damaged
Replace or repair Replace
Replace or repair Replace or repair Replace
1A—65
1
A—65 1A—66 1A—67
1
A—67
Piston related parts Worn cylinder Worn piston or piston pin Seized piston Damaged piston ring Bent connecting rod
Replace or repair
Replace
Replace Replace Replace
1A—55
1
A—57
1
A—57
1
A—57 1A—59
Valves or timing related parts Malfunction of HLA* Improper valve clearance Broken valve spring Excessive valve guide clearance Malfunction of timing belt tensioner
Replace Adjust
Replace Replace Replace
1A—75 1A—10 1A—53 1A—49 1A—61
Malfunction of cooling system Refer to Section 3A
Malfunction of fuel system Refer to Section 4
Others Malfunction of water pump bearing Improper drive belt tension Malfunction of alternator bearing Exhaust gas leakage
Replace Adjust Replace Repair
1 A— 7

1
A—48
* Tappet noise may occur if the engine is not operated for an extended period of time. The noise should stop after the
engine has reached normal operating temperature.
76G01A-005
1A—5

1A TUNE-UP PROCEDURE
76G01A-102
76G01A-103
76G01A-104
TUNE-UP PROCEDURE
Tune the engine according to the procedures
described below.
Battery
1. Check for corrosion on the terminals, or loose ca-
ble connections.
If necessary, clean the clamps and tighten firmly.
2. Check that the electrolyte level is between the UP-
PER and LOWER marks.
Add distilled water if necessary.
3. Check the specific gravity by using a hydrometer.
If the specific gravity reading is 1.200 or less,
recharge the battery. (Refer to Section 5.)
Air Cleaner Element
Visually check the air cleaner element for excessive
dirt, damage, or oil. Replace if necessary.
Caution
Do not clean the air cleaner element with com-
pressed air, replace if necessary.
Engine Oil
Check the engine oil level and condition with the oil
level gauge.
Add oil, or change it, if necessary.

76G01A-019

1A—6