1987 MAZDA 626 oil level

COOLANT 3A
76G03A-016
69G03A-006
COOLANT
INSPECTION
Coolant Level (Engine cold)
1. Check that the coolant level is near the radiator inlet
port.
2. Check that the coolant level in the coolant reser-
voir is between the FULL and LOW marks.
Add coolant if necessary.
Warning
a) Never remove the radiator cap while the en-
gine is hot.
b)Wrap a thick cloth around the cap when
removing it.
Coolant Quality
1. Check that there is no build-up of rust or scales
around the radiator cap or radiator filler neck.
2. Check that coolant is free from oil.
3. Replace the coolant, if necessary.
Coolant Leakage
1. Connect a tester and SST to the radiator inlet port.
2. Apply 103 kPa (1.05 kg/cm2, 15 psi) pressure
to the system.
3. Check that the pressure is held.
If not, check for coolant leakage.
Warning
When removing either the radiator cap or the
tester, loosen it slowly until the pressure in
the radiator is released, and then remove it.
86U03X-005
REPLACEMENT
1. Remove the radiator cap and loosen the drain plug.
2. Drain the coolant into a suitable container.
Warning
a) Never open the radiator cap while the en-
gine is hot.
b)Wrap a thick cloth around the cap when
loosening.
c) Use caution when draining hot coolant.
86U03X-006
3A-5

3B COOLANT
86U03X-004
69G03A-006
COOLANT
INSPECTION
Coolant Level (Engine cold)
1. Check that the coolant level is near the radiator inlet
port.
2. Check that the coolant level in the coolant reser-
voir is between the FULL and Low marks.
Add coolant if necessary.
Warning
a) Never remove the radiator cap while the en-
gine is hot.
b)Wrap a thick cloth around the cap when
removing it.
Coolant Quality
1. Check that there is no build-up of rust or scales
around the radiator cap or radiator filler neck.
2. Check that coolant is free from oil.
3. Replace the coolant, if necessary.
Coolant Leakage
1. Connect a tester and SST to the radiator inlet port.
2. Apply 103 kPa (1.05 kg/cm2, 15 psi) pressure
to the system.
3. Check that the pressure is held.
If not, check for coolant leakage.
Warning
When removing either the radiator cap or the
tester, loosen it slowly until the pressure in
the radiator is released, and then remove it.
86U03X-005
REPLACEMENT
1. Remove the radiator cap and loosen the drain plug.
2. Drain the coolant into a suitable container.
Warning
a) Never open the radiator cap while the en-
gine is hot.
b)Wrap a thick cloth around the cap when
loosening.
c) Use caution when draining hot coolant.
86U03X-006
3B—4

OUTLINE 4A
SPECIFICATIONS
F6 & F8 Engine
Engine F6 F8
Specification General Singapore General
ECE,
Hong Kong, &
Singapore

Idle speed
rpm
MTX 800
+58
Idle speed
rpm
ATX 950
t5§
(in N range)|
900 +5§ (in N
range)
CO concentration
%
2.0
± 0.5
(Without secondary
air
injection)

Carburetor

Type Down draft, two barrel
Throat diameter
mm (in)
Primary 30 (1.18) Throat diameter
mm (in)
Secondary 34 (1.34)
Venturi diameter
mm
(in) Primary 23.5 (0.93) Venturi diameter
mm
(in) Secondary 29.0 (1.14)
Main nozzle
mm (in)
Primary 2.6 (0.10) Main nozzle
mm (in)
Secondary 2.8 (0.11)
Main
jet mm (in)
Primary MTX 1.10 (0.0433) 1.09 (0.0429) 1.14 (0.045)
Main
jet mm (in)
Primary ATX 1.10 (0.0433) 1.08 (0.0425) 1.12 (0.044) Main
jet mm (in)

Secondary 1.50 (0.059)
Main
air
bleed mm (in)
Primary MTX 0.60 (0.024) 0.60 (0.024) 0.55 (0.022) Main
air
bleed mm (in)
Primary ATX 0.60 (0.024) 0.80 (0.031) 0.60 (0.024) Main
air
bleed mm (in) Secondary 0.50 (0.020)
Slow
jet mm (in)
Primary 0.48 (0.019) 0.46 (0.018) Slow
jet mm (in)
Secondary 1.00 (0.039) 1.10 (0.043)
Slow
air
bleed mm (in)
Primary No.1 0.80 (0.031)
Slow
air
bleed mm (in)
Primary No.2 1.90 (0.075) Slow
air
bleed mm (in) Secondary No.1 1.00 (0.039) 0.80 (0.031) Slow
air
bleed mm (in) Secondary No.2 0.50 (0.020)
Power
jet mm (in)
0.50 (0.0201
Fast idle adjustment
mm (in)

Clearance between
Drimarv
throttle valve and bore
1.40-1.76 (0.055—0.069) MTX: 0.48-0.64 (0.019-0.025) ATX: 0.56-0.72 (0.022-0.028)
Float level adjustment mm (in)
Max. fuel flow
"L"

Clearance between
flo

44 (17.3)
at and
air
horn without aasket Float level adjustment mm (in) Fuel stop
"H"
12.5(0.49)
Clearance between float and
air
horn without aasket; float lowered
by
own weight
Choke breaker diaphragm mmHg (inHg)
Start 180-240 (7.1—9.5) 100-160 (3.9—6.3) Choke breaker diaphragm mmHg (inHg) Stop 290-350 (11.4—13.8) 220—280 8.7—11.01
Choke opener mmHg (inHg) Start 35-65 (1.4-2.6)
...
35-65 (1.4-2.6) Choke opener mmHg (inHg) Stop
......
130-190 (5.1-7.5) 130-190 (5.1-7.5)

Fuel tank capacity
Liters (US gal, Imp gal) 60 (15.9, 13.2)

Fuel Dump

Delivery pressure kPa (kg/cm2,
psi)
20-26 (0.20-0.27, 2.8—3.8)
Feeding capacity cc/min (cu in/min) More than 860 (52.5)
at
idle

Fuel filter

Type Paper element with magnet

Air cleaner

Fresh-Hot switching Manual Diaphragm type
Element tvoe Oil permeated paper
Fuel specification Leaded regular

76G04A-513
4 A—15

4A OUTLINE
FE Engine
Engine FE 8Valve FE 12Valve FE 8Valve
Specification General Middle East
ECE, Hong Kong, & Singapore Unleaded fuel

Idle speed
rpm
MTX 800
+5§
850
+5§
Idle speed
rpm
ATX 900
+58 (in N
range)
CO concentration
%
2.0
± 0.5
(Without secondary
air
injection)

Carburetor

Type Down draft,
two
barrel
Throat diameter
mm (in)
Primary 30 (1.18) Throat diameter
mm (in)
Secondary 34 (1.34)
Venturi diameter
mm (in)
Primary 23.5 (0.93) Venturi diameter
mm (in)
Secondary 29.0 (1.14)
Main nozzle
mm (in)
Primary 2.6 (0.10) Main nozzle
mm (in)
Secondary 2.8 (0.11)
Main
jet mm (in)
Primary MTX 1.14 (0.045) 1.09 (0.0429) 1.14 (0.045) 1.09 (0.0429) Main
jet mm (in)
Primary ATX 1.12 (0.044) 1.08 (0.0425) 1.12 (0.044) 1.09 (0.0429) Main
jet mm (in)

Secondary 1.55 (0.061) 1.50 (0.059) 1.55 (0.061) 1.50 (0.059)
Main
air
bleed
mm (in)
Primary MTX 0.50 (0.020) 0.60(0.024) 0.50 (0.020) 0.50 (0.020) Main
air
bleed
mm (in)
Primary ATX 0.55 (0.022) 0.80 (0.031) 0.55 (0.022) 0.50 (0.020) Main
air
bleed
mm (in) Secondary 0.50 (0.020)
Slow
jet mm (in)

Primary 0.46 (0.018)
Slow
jet mm (in)
Secondary MTX 1.10 (0.043) 1.00 (0.039) 1.10 (0.043) 0.90 (0.035) Slow
jet mm (in)
Secondary ATX 1.10 (0.043) 1.00 (0.039) 1.10 (0.043) 1.00 (0.039)
Slow
air
bleed
mm (in)
Primary No.1 0.80 (0.031)
Slow
air
bleed
mm (in)
Primary No.2 1.90 (0.075) Slow
air
bleed
mm (in) Secondary No.1 0.80 (0.031) 1.00 (0.039) 0.80 (0.031) 1.00 (0.039)
Slow
air
bleed
mm (in) Secondary No.2 0.50 (0.020)
Power
jet mm (in)
MTX 0.50 (0.020) 0.50 (0.020) Power
jet mm (in)
ATX 0.50 (0.020) 0.40 (0.016)
Fast idle adjustment
mm (in)
Clearance between primary throttle valve and bore
MTX 0.48—0.64
(0.019-0.025) 1.40—1.76
(0.055-0.069)
0.48—0.64
(0.019-0.025) 1.40-1.76
(0.055-0.069)
Fast idle adjustment
mm (in)
Clearance between primary throttle valve and bore ATX 0.56-0.72 (0.022—0.028)
1.40—1.76
(0.055-0.069) 0.56-0.72 (0.022—0.028)
1.40-1.76
(0.055-0.069)
Float level adjust-
ment
mm (in)

Max. fuel flow
"L"

Clearance between
flo

44 (17.3)
at and
air
horn without aasket Float level adjust-
ment
mm (in)
Fuel stop
"H" |
12.5(0.49)
Clearance between float and
air
horn without aasket: float lowered
bv
own weiaht
Choke breaker diaphragm mm-Hg (in-Hg)
Start 100-160 (3.9—6.3) 180—240 (7.1-9.4) 100-160
(3.9-6.3)
180-240
(7.1-9.4) Choke breaker diaphragm mm-Hg (in-Hg) Stop 220—280
(8.7-11.0)
290-350
(11.4-13.8)
220—280
(8.7-11.0)
290-350
(11.4-13.8)
Choke opener mmHg (inHg)
Start 80—120
(3.1-8.7)
30-70 (1.2-2.8) Choke opener mmHg (inHg)
Stop 220-280 (8.7—11.0) 130-190
(5.1-7.5)

Fuel tank capacity
Liters (US aal, Imp aal) 60 (15.9, 13.2)

Fuel DumD

Delivery pressure kPa (kg/cm2,
psi)
20-26 (0.20—0.27, 2.8-3.8) 20-29 (0.20-0.30, 2.8-4.3)
20-26 (0.20-0.27, 2.8-3.8)
Feedina caDacitv cc/min
feu
in/mini More than 860 (52.5)
at
idle

Fuel filter

Type Paper element with magnet

Air cleaner

Fresh-Hot switchina Diaphragm Manual Diaphragm Bimetal
Element
tvDe
Oil permeated paper
Fuel specification Leaded super
Unleaded super Leaded regular Leaded super Unleaded super Unleaded regular

76G04G-514
4A—16

4C FUEL SYSTEM
COMPONENT DESCRIPTION
Component Function Remark
Air flow sensor Detects amount of intake air;
sends signal to engine control unit
Clutch switch Detects in-gear condition; sends signal to engine control unit Switch ON when clutch pedal released
Engine control unit Detects signals from input sensors and switches; controls injector and fuel pump operations
Fuel filter Filters fuel
Fuel pump Provides fuel to injectors • Operates while engine running
• Installed in fuel tank
Fuel pump control unit (4WS) Monitors fuel level in left section; controls transfer pump operation
G signal pick-up Detects No.1 cylinder TDC; sends signal to engine control unit Installed in distributor
Idle switch Detects when throttle valve fully closed; sends signal to engine control unit Installed on throttle body
Ignition switch (ST position) Sends engine cranking signal to engine control unit
Injector Injects fuel into intake port • Controlled by signals from engine control unit • High-ohmic injector
Intake air thermo sensor Detects intake air temperature; send signal to engine control unit
Control relay Supplies electric current to injectors fuel pump and engine control unit
Ne signal pick-up Detects crank angle at 180° intervals; sends signal to engine control unit Installed in distributor
Neutral switch Detects in-gear condition; sends signal to engine control unit
Switch ON when in gear
Oxygen sensor (Unleaded fuel) Detects oxygen concentration; sends signal to engine control unit
• Zirconia ceramic and platinum coating • Integrated heater coil
Pressure regulator Adjusts fuel pressure supplied to injectors
Pulsation damper Absorbs fuel pulsation
Throttle sensor Detects throttle valve opening angle;
sends signal to engine control unit
Installed on throttle body
Transfer pump (4WS) Pumps fuel from the left to the right side Controlled by fuel pump control unit
Transfer pump switch (4WS) Detects fuel level in left section;
sends signal to control unit
Water thermo sensor Detects coolant temperature; sends signal to engine control unit
Water thermo switch (Unleaded fuel) Detects radiator coolant temperature; sends signal to engine control unit ON: above 17°C (63°F)
76G04C-088
4C-50

7A ON-VEHICLE MAINTENANCE
61G07X-189
61G07X-190
61G07X-191
ON-VEHICLE MAINTENANCE
TRANSAXLE OIL
Inspection
1. Park the vehicle on level ground.
2. Remove the speedometer cable dust cover, and
disconnect the cable from the speedometer driv-
en gear.
3. After removing the bolt, pull the gear case to re-
move
it
from the housing. (Insert a flat-tipped screw-
driver between the speedometer gear case and
the clutch housing, and use
it
to pry the gear case
loose if necessary.)
4. Check that the oil level is between the "F" and "L".
5. If not, add the necessary amount of the specified
oil through the gear case hole.
Replacement
1. Park the vehicle on level ground.
2. Remove the speedometer driven gear.
(See "Inspection" section above.)
3. Remove the drain plug, and drain the oil.
4. Replace the drain plug, and add the necessary
amount of the specified oil through the speedom-
eter gear case hole.
Specified oil
Type
ATF: DEXRON II
Above -18°C (0°F):
API: GL-4 or GL-5
SAE 80W-90 or SAE 90
Capacity:
3.35 liters (3.6 US qt, 3.0 Imp qt)
76G07A-006
7A—6

7B TROUBLESHOOTING (G4A-EL)

ON VEHICLE-
-f-
—OFF VEHICLE

\ Inspection point
and

\ reference page

Condition
•

Electronic control system Prelim-
inary
Hydraulic
control
system
Power train \ Inspection point
and

\ reference page

Condition
•
7B-66

m CO I m r--
7B-63

i
cn to I m
Section

4B

|

Section

4B

|

ID to i m
CO CO 1 CD
7B-68
|
en CO 1 IX)
to 1 00 r-.
cn CD 1 CO
7B-69
|

1 CD r--
i no
cn s-1 m
Section
4B

r*-cn
S-1 CD h-
"=1-
rJ CO
7 CD r-
(XI o
1 m
cn CM 1 CD
7B-107

|
CD
7 CD 7 m
I
7B-113
I
CO CM
7 CO r-.
m cn
7 CO r-.
cn
7 DO r-
CM CM
7 CO

|
7B-126

7 00 r-
CO 7 cn
1*-r*-
7 m r-
\ Inspection point
and

\ reference page

Condition
•
Brake

light
switch

|

Inhibitor

switch

|

Mode

switch

|

1
CO. •o o X
Idle

switch

Throttle

sensor

|

Water

temp,

switch

|
0 tn c 0) cn
s
ffi
Q tn 01 o Hi >
Pulse

generator

|

"a o c 0) a to CM
TJ O CL ID s CO C\l 3-4

solenoid

|

Lock-up
solenoid

I

ATF

level
and
condition

|

Selector

lever

m Xj CO CJ 03
1 sz
Idle
speed
and
Ignition
timing

Control

valves

Accumulators
Oil
pump
Hydraulic

circuit

Torque

converter

Forward

clutch
Coasting
clutch

Reverse

clutch
JT O
u TT ro 2-4

brake
band
and

servo
$ 2
B cn cii > £ "O C CO
o
XI y
o >. CO S cb a O
One-way

clutch

2

s CI Cn tz JC 5 0-
Planetary

gear

Differential

assembly
Accelerating

Vehicle does
not
move
in
D,
S,
L,
or R
range
O O O O O O O O O O 0

Accelerating

Vehicle moves
in N
range -0 0 -—

Accelerating
Excessive creep
-0 O O -—

Accelerating
No creep
at all
O o o o
o
G 0 O O

Shifting

|

No shift
O O o
o
0 O 0 0
o
o O

Shifting

|
Abnormal shift sequence
0 o O O 0
o
o 0 O o o 0 O

Shifting

|
Frequent shifting 0 o 0 0 o 0 O O 0

Shifting

|

Excessively high
or
low
shift point 0 o 0 O 0 0 o 0 O 0 0
Shifting

|

No lock-up
0 o 0 0 o 0 O O o O

Shifting

|

No kick-down o o o o

Slipping

Engine
run
away
or
slip when
starting vehicle 0 o 0 O o O

Slipping
Engine
run
away
or
slip when
up-
or
down-shifting o o o 0 o O 0 0 O
8 n cn 4S SI V)
Excessive
N to D or N to R

shift shock o O o o o O
8 n cn 4S SI V)
Excessive shift shock when
up-

shifting
or
downshifting o o o o 0 0 0 8 n cn 4S SI V) Excessive shift shock when
changing range 0 0 o 0 o

j
Noise

Transaxle noisy
in N or P

range o o 0 O

j
Noise

Transaxle noisy
in D, S, L,
or

R range o 0 0 O

I
Others

j

No engine braking o O o 0 o o

I
Others

j

No mode change o 0 o o o o o o o
O
o
0

I
Others

j
Transaxle overheats
o o
0 o 0 o 0

I
Others

j
Vehicle moves
in
"P",
or
park-ing gear
not

disengaged when
"P"
is
dis-
engaged
0 O

I
Others

j

Hold indicator flashes o
0
o
0
o
O
o — — —
I
Others

j

Engine will
not
start
o
o
O — — —
76G07B-014
7B—14

TROUBLESHOOTING (G4A-EL) 7B
STEP 4 (STALL TEST)
This step is performed to determine if there is slippage of the friction elements or malfunction of the
hydraulic components.
Preparation
Check the following items prior to testing:
1. Engine coolant, engine oil and ATF levels.
2. Warm the engine thoroughly to raise the ATF temperature to operating level (50—80°C, 122—176°F).
3. Engage the parking brake and use wheel chocks at the front and rear wheels.
Pull the parking brake Water temperature
ATF
79G07C-084
7B-27