1987 MAZDA 626 length

7C VIC SYSTEM
COMPONENT DESCRIPTION
Component Function Remark
Dynamic chamber Provides chamber for VIC system operation Integrates one-way check valve
Engine control unit Monitors engine rpm, controls solenoid valve Unleaded fuel: ON at above 5200 rpm Leaded fuel: ON at above 5400 rpm
Intake manifold Provides short and long length of intake travel Integrates shutter valve
One-way check valve Holds vacuum in vacuum chamber Installed between dynamic chamber and vacuum chamber
Ne signal pick-up Detects crank angle at 180° intervals; sends signal to control unit Installed in distributor
Solenoid valve (Vlfc) Controls vacuum to shutter valve actuator
Shutter valve Closes short intake port
Shutter valve actuator Actuates shutter valve according to
vacuum from solenoid valve
76G04C-066
TROUBLESHOOTING
Check the condition of the wiring harness and connectors before checking the sensor or switches.
Note
Make the system inspection first. If no problem is found, continue with inspection of the
next system of the Troubleshooting Guide. (Refer to pages 4C—10 and 11.)
Possible cause
\Page\.
Symptom
Vacuum chamber (Vacuum leak)
Shutter valve actuator
One-way check valve
Solenoid valve (VIC) Engine control unit (1C)
System
Inspection
Possible cause
\Page\.
Symptom
Vacuum chamber (Vacuum leak)
Shutter valve actuator
One-way check valve Vacuum ' Electric signal | signal
Engine control unit (1C)
System
Inspection
Possible cause
\Page\.
Symptom 4C—42 4C—41 4C—43 4C—42 4C-98 4C—41
Rough idle
During warm up 2 3 4 — — — 1 Rough idle After warming up 2 3 4 — — — 1
Poor acceleration, hesitation,
or lack of power 6 5 7 2 3 4 1
Poor fuel consumption 6 5 7 2 3 4 1
76G04C-067
4C—40

OUTLINE 5
SPECIFICATIONS
Gasoline Engine
item
Engine
F6 F8 FE
(8 VALVE)
FE (12 VALVE) FE
(DOHC)
Battery
Voltage
Type and capacity
12. Negative ground
(20 hour rate) 34B19L(S) (33 Ah): General 50D20L (50 Ah), 55D23L (60 Ah): ECE
Alternator
Type A.C.
Output V-A 12-70
Regulator type Transistorized (built-in IC regulator)
Regulated voltage 14.1-14.7
Brush length
mm (in) Standard 16.5 (0.650)
Minimum 8.0 (0.315)
Drive belt tension
mm (in)/98 N (10 kg, 22 lb) New: 6-8 (0.24-0.32), Used: 7-9 (0.28-0.35)
Starter
Type Coaxial reduction: Middle East & General (FE • carburetor)
Non-reduction: Others
Output V-kW 12-0.85
Brush length
mm (in)
12-0.95
Standard 17.0 (0.669)
Minimum 11.5 (0.453)

Unleaded fuel
17.0 (0.669)
Others
17.51
Unleaded fuel 11.5(0.453) Others 10,0 (0.394)

12-1.4 12-0.95
17.0 (0.669)
11.5 (0.453)
Ignition timing 6 ± 10 BTDC (Vacuum hose disconnected)

12
±
1° BTDC
(Test connector

grounded)
Distributor
Type Fully transistorized (HEI)
Electronic spark advance
Centrifugal spark advance
(crank angle/engine speed)
degree/rpm
F6
-2-2/1,000 6-10/2,100 14-18/6,100
F8 -2—2/1,000 10-14/2,100 18-22/6,100
FE (8 VALVE)—Carburetor Unleaded fuel
(MTX)-2—2/1,760 12—16/3,360 22—26/5,320 (ATX)-2-2/1,300 12-16/3,360 22-26/5,320
Others
-2—2/1,460 10—14/2,540 22—26/5,540
FE (12 VALVE)—Carburetor -2-2/1,200 10—14/2,400 10—14/4,000 16-20/5,000
FE—Fuel injection (except FE DOHC) -2—2/1,000 10—14/2,600 10—14/4,600 16—20/5,800
Unleaded fuel model 76G05X-503
5-5

5 OUTLINE
Item
Engine F6 F8 FE
(8 VALVE)
FE (12 VALVE) FE (DOHC)
F6 and F8
-2-2/100 6-10/300
FE (8 VALVE)—Carbu retor Unleaded fuel -2—2/120 8—12/245
Distributor
Vacuum spark advance (Crank angle/Vacuum)
Others (MTX) -2-(ATX) -2--2/100 16-
-2/100 10-
-20/250
-14/200
degree/mmHg (inHg) FE (12 VALVE)—Carburetor
-2-2/120 11-15/300
FE—Fuel injection (except FE DOHC) [A chamber] -2-2/125 18-22/300
[B chamber] -2-2/125 -6 10/200
Spark plug
Type
FE (8 VALVE)*1 NGK: BPR5ES-11, BPR6ES-11 Nippon Denso: W16EXR-U11, W20EXR-U11 Others
NGK: BPR5ES, BPR6ES Nippon Denso: W16EXR-U, W20EXR-U
NGK:
BCPR5E, BCPR6E Nippon
Denso: Q16PR-U, Q20PR-U
Unleaded fuel
NGK: BCPR5E-11 BCPR6E-11 BCPR7E-11
Leaded fuel NGK: BCPR5E BCPR6E
Plug gap mm (in)
0.75-0.85 (0.030-0.033), FE (8 VALVE)*1 1.0-1.1 (0.039-0.043)
0.7-0.8
(0.028-0.031)
1.0-1.1 "
/n noo
n n/9
0.7-0.8 *2 (0.028-0.031)
Firing order 1-3—4-2 76G05X-504
Diesel Engine
——Engine Item RF-N RF-CX
Battery
Voltage V 12, Negative ground Battery Type and capacity
(20 hour rate) 80D26L (65)
50D20L, 50D20R (50)-ECE 80D26L (65)
65D23L, 65D23R (55)
Alternator
Type A.C.
Alternator
Output V-A 12-70 12-75
Alternator
Regulator type Transistorized (built-in IC regulator)
Alternator Regulated voltage V 14.1-14.7 Alternator
Brush length mm (in)
Standard 16.5 (0.650) 21.5 (0.846)
Alternator
Brush length mm (in) Minimum 8.0 (0.315) 8.0 fO.315)
Alternator
Drive belt tension
mm (in)/98 N (10 kg. 92 lb) New: 9-11 (0.35-0.43), Used: 12-14 (0.47-0.55)
Starter
Type Reduction
Starter Output V—kW 12—2.0, 12-2.2 (Cold area) Starter Brush length
mm (in)
Standard 2.0 kW: 17.0 (0.669). 2.2 kW: 18.0 (0.709) Starter Brush length
mm (in) Minimum 2.0 kW: 11.0 (0.453), 2.2 kW: 11.0 (0.453)
Firing order 1-3-4-2
Unleaded fuel model *2 Leaded fuel model
76G05X-505
5-6

6 CLUTCH PEDAL
INSPECTION
Check the following, and repair or replace any faulty
parts.
1. Worn or damaged pedal bushing
2. Twisted or bent pedal
3. Worn or damaged pedal pad
76G06X-008
INSTALLATION
Install in the reverse order of removal referring to the
installation note.
Installation Note
Apply grease (lithium base, NLGI No.2) to the
bushings.
76G06X-009
ADJUSTMENT
1. Adjust the pedal height. (Refer to page 6—4.)
2. Check the pedal free play, and adjust if necessary.
(Refer to page 6—4.)
3. Adjust the installation length of the assist spring.
The installation length is adjusted by turning nut
A show in the figure and adjusting dimension B.
Standard dimension:
38.6—39.6 (1.520—1.559 in)
76G06X-010
6-6

7B INSPECTION AND REPAIR
OIL PUMP
Disassembly
Disassemble in the sequence shown in the figure.
8—11 Nm (82—112 cm-kg, 71—97 in-lb)
24—35 N-m (2.4-3.6 m-kg, 17-26 ft-lb)
1. Bearing race
2. Seal rings
3. Oil pump cover
4. Pump flange
5. Guide ring and guide spring
6. Vane
7. Rotor
8. Spring
86U07B-174
9. Cam ring
10. Pivot roller
11. Seal pin and spring
12. Spring
13. Valve
14. Oil pump body
15. O-ring
Inspection
Check the following and replace any faulty parts.
1. Sliding surfaces of the oil pump cover and oil pump
body for damage or wear
2. Broken or worn seal ring
3. Weakened spring
Free length of springs:
(1) For the cam ring (No. 8)
41.6 mm (1.64 in)
(2) For the valve (No. 12)
35.0 mm (1.38 in)
86U07B-175
7B—108

7B INSPECTION AND REPAIR
6. Spring and retainer assembly for separation or
deformation
Free length of spring:
29.8 mm (1.173 in)
86U07B-198
Assembly
Reverse clutch
1. Install the reverse piston.
(1) Apply ATF to inner and outer faces of the seals,
and install them to the reverse piston.
(2) Face the outer seal lip toward the inside by
gently rolling
it
down around the circumference
for easier installation into the reverse clutch
drum.
86U07B-199
(3) Install the reverse piston by pushing evenly
around the circumference, being careful not to
damage the seal rings.
86U07B-200
2. Install the piston return spring with the tabs facing
away from the reverse piston.
3. Install the return spring stopper with the step fac-
ing upwards.
86U07B-201
7B—116

INSPECTION AND REPAIR 7B
86U07B-245
SB T
g. SH -i
1
Inspection
Check the following and repair or replace any faulty
parts.
1. Drive and driven plates for damage or wear
Drive plate thickness
Standard: 1.6 mm (0.063 in)
Minimum: 1.4 mm (0.055 in)
2. Clutch piston for damage or cracks
3. Clutch drum for damage or deformation
4. Seal contact areas for damage
5. Check ball for leaking or sticking
6. Spring and retainer assembly for separation or
deformation
7. Broken or worn snap ring
8. Broken or weakened spring
Free length of spring:
33.2 mm (1.307 in)
86U07B-246
Assembly
1. Install the 3-4 clutch piston.
(1) Apply ATF to the inner and outer seals, and
install them onto the 3-4 clutch piston.
(2) Install the piston by pushing evenly around the
circumference, being careful not to damage the
seal rings.
86U07B-247
2. Install the spring and retainer assembly.
86U07B-248
7B—129

7B INSPECTION AND REPAIR
2-3 ACCUMULATOR
Disassembly
Disassemble in the sequence shown in the figure.
1. Snap ring
2. Stopper plug
3. O-ring
4. 2-3 accumulator
spring
5. 2-3 accumulator
piston
6. Large seal ring
7. Small sea ring
86U07B-255
Inspection
Check the following and replace any faulty parts.
1. Damaged or worn piston
2. Damaged or worn stopper plug
3. Broken or weakened spring
Free length of spring:
G4A-EL 83.3 mm (3.280 in)
G4A-HL 76.0 mm (2.992 in)
76G07B-138
Assembly
1. Install the 2-3 accumulator.
(1) Apply ATF to large and small seal rings; then
install them to the accumulator piston.
(2) Insert the 2-3 accumulator.
86U07B-257
7B—132