spark plugs MAZDA PROTEGE 1992 User Guide

82 ASSEMBLY
Oil Level Gauge Pipe Stay
1. Install the oil level gauge pipe stay.
Tightening torque:
7.8-l 1 N-m (80-l 10 cm-kg, 89-95 in-lb)
Oil Level Gauge
1. Install the level gauge.
Spark Plug
1, Install the spark plugs.
Tightening torque:
15-23 N*m (1.5-2.3 m-kg, 11-17 ft-lb)
Oil Pressure Switch
1. Install the oil pressure switch.
Tightening torque:
12-18 N-m (120-180 cm-kg, 104-156 in-lb)
Oil Cooler
1. Remove all foreign material from the oil cooler mounting
surface.
2. Apply a small amount of clean engine oil to the rubber seal
of the oil cooler.
3. Install the oil cooler with paint mark (white) facing up.
4. Tighten the oil cooler lock nut.
Tightening torque:
29-39 N.m (3.0-4.0 m-kg, 22-29 ft-lb)
5. Connect the harness to oil pressure switch.
Oil Filter
1. Remove all foreign material from the oil filter mounting
surface.
2. Apply a small amount of clean engine oil to the rubber seal
of the oil filter.
3. Install the oil filter and tighten it by hand until the rubber
seal contacts the base.
4. Tighten the filter 1 and 116 turns with a filter wrench. --_

TROUBLESHOOTING GUIDE
TEP INSPECTION ACTION
4 Check if ECU terminal voltages are OK Yes Go to next step
MTX...Especially IC, 20 and 2Q
ATX... Especially lC, 2E and 3D v page F-150
No Check for cause ~3‘ page F-151
5
Check for air leakage of intake air system com- Yes Repair or replace
ponents
No Go to next step
6 Check if engine starts when water thermosensor Yes Check water thermosensor c7 page F-158 is disconnected
Check for correct engine compression 82-10 ’ No
Check engine condition CIP page Bl-10
Engine compression: 82-10
l BP SOHC l Worn piston, piston rings or cylinder 834 kPa (8.5 kg/cm*, 121 psi)300 rpm
wall
l BP DOHC l Defective cylinder head gasket 883 kPa (9.0 kg/cm*, 128 psi)-300 rpm l Distorted cylinder head
l B8 l Improper valve seating 932 kPa (9.5 kg/cm*, 135 psi)300 rpm *Valve sticking in guide
9 Check if spark plugs are OK Yes Go to next step CT- page G-18
1.0-l .l mm
(0.039-0.043 in) DAMAGE AND
DETERIORATION No Clean, or replace c7 page G-18
10 Try known good ECU and check if condition
improves CT- page F-149
23UOFX-01 I
F-33

F TROUBLESHOOTING GUIDE
8 ROUGH IDLE/ENGINE STALLS AT IDLE - ALWAYS
bESCRIP- l Engine starts normally but stalls or vibrates excessively at idle in every condition
‘ION TROUBLESHOOTING HINTS]
D Air/Fuel mixture too lean @ Incorrect idle speed
l Air leakage l Idle speed misadjustment l Fuel injection control malfunction l Idle speed control malfunction
*Low fuel line pressure @ One or more spark plugs not firing
3 One or more injectors clogged or not operating @ Low engine compression
3 Low intake air amount @ Airflow meter stuck INSPECTION
1
1
2
3
4
5
6
- Check if “00” is displayed on Self-Diagnosis
Checker with ignition switch ON w page F-82
SYSTEM2ELECT: 1
M v’SELECT SW: A TEST
Check if ECU terminal voltages are OK
MTX...Especially 2D, 20 and 2Q
ATX... Especially 2B, 2E and 3D CT page F-150
Disconnect high-tension lead at idle and check if
engine speed decreases equally at each cylinder
Check for injector operating sound at idle
Check if battery voltage exists at injector connec-
tor (W/R) wire
Check if strong blue spark is visible at discon-
nected high-tension lead
, Yes No Service Code No. displayed
Check for cause (Refer to specified
:heck sequence) “88” flashes
Check ECU terminal IF voltage CT page F-150
Specification: Battery voltage
(Ignition switch ON)
3 If OK, replace ECU w page F-149 3 If not OK, check wiring between
ECU and Self-Diaanosis Checker Yes
Go to next step No
Check for cause Yes
Go to Step 8 No
Go to next step
Go to Step 6
Go to Step 5 Yes
No
Yes
No
Yes
No I-
30 to next step w page F-83
0 page F-151
Check if injector resistance is OK c7 page F-131
Resistance: Approx. 12-l 852
c3 If OK, check wiring between ECU
and injector
c3 If not OK, replace injector w page F-131
Check wiring between ECU and injector
Go to next step
Check high-tension lead w page G-17
Q If OK, check distributor cap and
rotor w page G-22
c3 If not OK, replace high-tension lead
F-42

TROUBLESHOOTING GUIDE F
No Replace airflow meter
9
Check for injector operating sound at idle Yes Go to Step 11
No Go to next Step
10 Check if battery voltage exists at injector connec- Yes Check if injector resistance is OK CT page F-131
tor (W/R) wire Resistance: 12-l 6fi
c3 If OK, check wiring between ECU
and injector
c3 If not OK, replace injector CT page F-131
No
Check wiring between ECU and injector
11 Check if strong blue spark is visible at discon-
Yes Go to next step
netted high-tension lead
No Check high-tension lead
+ If OK, check distributor cap and
rotor w page G-22
* If not OK, replace high-tension lead
12
Check if spark plugs are OK Yes Check for correct engine compression CT page Bl-10
w page G-16 82-10
Compression (Minimum):
. BP SOHC
834 kPa (8.5 kg/cm2, 121 psi)300 rpm
BON BUILDUP l BP DOHC
883 kPa (9.0 kg/cm*, 128 psi)-300 rpm
l.O-l.lmm ’ B6 DAMAGE AND 932 kPa (9.5 kg/cm’, 135 psi)-300 rpm DETERIORATION
c3 If OK, go to next step
c13 If not OK, check for cause CT page Bl-10
B2-10
No
Clean or replace w page G-18
13
Check for injector leakage Yes Replace injector CT page F-131
w page F-132
No Go
to next step
14 Try known good ECU and check if condition im-
proves cc7 page F-149
23UOFX-030
F-53

DECHOKE CONTROL SYSTEM t-
DECHOKE CONTROL SYSTEM
DESCRIPTION
To facilitate starting the engine when the spark plugs become fouled, such as when the engine is flooded,
fuel injection is cut if the throttle valve is held wide open while cranking and the engine coolant temperature
is O°C (32OF) or below. This allows the spark oluas to drv and purges excess fuel from the cylinders.
f-- ECU _
. IGNITION SWITCH (START)
l ENGINE SPEED BELOW 500 rpm ’
l THROTTLE VALVE FULLY OPEN
l ENGINE COOLANT TEMPERATURE ;
BELOW
0% (32°F) I FUEL CUT
OBUOFX-19
I / / ‘ I
SYSTEM OPERATION
1.
2. Check if the engine coolant temperature is below O°C
(32OF).
If the engine coolant temperature is above O°C (32OF), dis-
connect the water thermosensor connector and connect an
approx. 10 kB resistor to the connector.
03UOFX.198 3. Turn the ignition switch to START and verify that the injec-
OBUOFX-19! 3
tor operating sound is heard.
4. Depress the accelerator pedal fully and turn the ignition
switch START. Verify that no injector operating sound is
heard.
F-l 45

G
ENGINE ELECTRICAL SYSTEM
INDEX ......................................................
OUTLINE ..................................................
SPECIFICATIONS .................................... G- 3
TROUBLESHOOTING
GUIDE.. .................... G-
4
DIAGNOSTIC INDEX ................................
SYMPTOM TROUBLESHOOTING..
............. :- t
-
CHARGING SYSTEM ................................. G- 6
PREPARATION .......................................
CIRCUIT DIAGRAM ................................. :I ;
TROUBLESHOOTING .............................. G- 7
BATTERY ............................................... G- 6
ALTERNATOR ........................................ G-10
DRIVE BELT ........................................... G-14
IGNITION SYSTEM .................................... G-15
PREPARATION ....................................... G-15
CIRCUIT DIAGRAM ................................. G-15
TROUBLESHOOTING .............................. G-16
IGNITION TIMING ................................... G-17
HIGH-TENSION LEAD .............................. G-17
SPARK PLUGS ....................................... G-16
IGNITION COIL ....................................... G-19
DISTRIBUTOR ........................................ G-20
IGNITER ................................................ G-23
STARTING SYSTEM .................................. G-24
PREPARATION ....................................... G-24
CIRCUIT DIAGRAM ................................. G-24
STARTER ...............................................
G-25
STARTER INTERLOCK SWITCH (MTX)
........ G-31
03UOGX-001

G INDEX
NDEX
- 03UOGX-00:
6. Ignition coil 1. Battery
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page G- 8
Recharging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..t page G- 9
2. Alternator
Removal / Installation . . . . . . . . . . . . . . . . . .
page G-l 0
Disassembly / Assembly . . . . . . . . . . . . . page G-l 1
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
page G-l 2
3. Drive belt
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
page G-l 4
Adjustment . . . . . . . . page G-l 4
Replacement . . . . . . . . . . . . . .
page G-l 4
4. High-tension lead
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page G-l 7
5. Spark plugs
Removal / Installation . . . . . . . . . . page G-1 0
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
page G-l 8
G-2
Inspection .,.. . . . . . . . . . . . . . . . . I . . . . . page
G-l 9
7. Distributor
Spark test ., . . . . . . . . . . ,... . . . . . . . .
page G,-20
Electronic advance inspection page G-20
Removal / Installation ,................. page G-21
Disassembly / Assembly.. , . . page
G-22
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
page G-22
8. Igniter
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
page G-23
9. Starter
Removal / Installation .;...........,.... page G-25
Disassembly ! Assembly . . . . . . . . . . . . . page G-26
Inspection . . . . ...‘........................,,,
page G-28 .--
10. Starter interluck switch
Inspection... . . . . . . . . . . . . . . . . . . . . ,.., ,...,
page G-31

G IGNITION SYSTEM
-.-.. .----___ 03UOGX-042
03UOGX-04
--.---- J
03UOGX-044
WEAR AND CARBON
/
c- -BURNT
PLUG GAP
L--
c
DAMAGE AND
,llllll....*llll,lllf DETERIORATIOF
; -,DAMAGE
03UOGX.04
G-18
SPARKPLUGS
Removal / Installation
1. Remove and install the high-tension leads carefully.
Caution
l When the spark plug lead is to be pulled off, be sure
to pull the boot itself, not the wire.
Y’
2. Remove and install the spark plug with a plug socket.
Caution
l Be sure the socket is fit squarely over the spark
plug.
3. Apply anti-seize compound or molybdenum-based lubricant
to the spark plug threads.
4. Tighten the spark plug to the specified torque.
Spark plug Tightening torque:
15-23 N.m (1 S-2.3 m-kg, 11-17 f&lb)
Inspection
1. Remove the spark plug.
2. Connect the spark plug to a high-tension lead.
3. Hold the spark plug with insulated pliers
5-10mm
(0.20-0.39 in) from a ground.
4. Crank the engine and verify that there is a strong blue spark.
4
Note
l If there Is no spark, replace the spark plug.
5. Check the following points. If a problem is found, replace
the spark plug.
l Damaged insulation.
l Worn electrodes.
l Carbon deposits.
If cleaning is necessary, use a plug cleaner or a wire
brush. Clean the upper insulator also.
l Damaged gasket.
l Burnt condition.
Plug gap: 1.0-l .l mm (0.039-0.043 in)

PARTS
DIFFERENTIAL ..................................... Jl-52
SHIFT MECHANISM ............................. Jl-56
TRANSAXLE ............................................ Jl-8
TRANSAXLE OIL .................................... Jl-7
MANUAL TRANSAXLE (G5M-R) .................. J2-2
DIFFERENTIAL ..................................... J2-43
SHIFT MECHANISM ............................. J2-46
TRANSAXLE.. .......................................... J2-8
TRANSAXLE OIL .................................... J2-7
MOLDING, PROTECTOR, GARNISH ...........
S-42
BELTLINE MOLDING ............................. S-48
REAR WINDOW MOLDING.. ............. S-43,44
ROOF MOLDING.. .................................. S-46
SIDE PROTECTOR ................................. S-49
UPPER WINDSHIELD MOLDING,
A-PILLAR GARNISH ............................ S-42
NEUTRAL SWITCH (MTX) . . . . . . . . . . . . . . . . . . . . . . . . . . F-l 73
0
1
\_ OIL COOLER (ENGINE). ................................ D-8
OIL PAN (ENGINE) ........................................ D-9
OIL PUMP (ENGINE) ................................... D-l 3
..................................... F-l 71
OXYGEN SENSOR
P
PARKING BRAKE ......................................... P-31
PARKING BRAKE CABLE ............................ P-32
PARKING BRAKE LEVER ............................ P-33
PARKING BRAKE SHOE ............................. P-31
PASSIVE SHOULDER BELT SYSTEM.. ..... S-103
DOOR CATCH SWITCH ....................... S-l 07
LIMIT SWITCH ...................................... S-l 07
PASSIVE SHOULDER BELT MOTOR.. S-106
SPEED SENSOR ................................... S-l 07
WARNING SWITCH .............................. S-l 07
PCV VALVE ................................................
POWER BRAKE UNIT ‘;--=I;;
..................................
POWER DOOR LOCK SYSTEM ................... S-23
DOOR LOCK CONTROL.. ...................... S-26
DOOR LOCK SWITCH.. .......................... S-26
DOOR LOCK TIMER AND RELAY.. ....... S-26
POWER STEERING.. .................................... N-23
POWER STEERING FLUID .......................... N-27
POWER STEERING OIL PUMP.. ................. N-37
POWER STEERING PRESSURE SWITCH . . F-l 73
POWER WINDOW SYSTEM.. .......................
S-27
MAIN POWER WINDOW SWITCH.. .......
S-31
POWER WINDOW MOTOR.. ..................
S-32
POWER WINDOW SUB-SWITCH ........... S-32
PRESSURE REGULATOR (FUEL). ............. F-l 29 . . . . . . . . , . . . . . , . RADIATOR CAP .............................................
E-7
RADIATOR GRILLE,
I
LOWER GRILLE MOLDING ....................... S-51 fl
RADIATOR THERMOSWITCH ...................... E-17 t
REAR AXLE ................................................. M-10
REAR BRAKE (DISC) ................................... P-23
REAR BRAKE (DRUM) ................................. P-28
REAR BUMPER ............................................ s-40
REAR COMBINATION LIGHT.. ....
REAR CROSSMEMBER ............................... R-29
REAR DOOR ................................................ S-l 5
REAR DOOR LOCK AND OPENER.. .
REAR FINISHER ........................................... s-52
REAR HATCH ............................................... s-20
REAR HATCH LOCK AND OPENER.. ......... S-22
REAR SHOCK ABSORBER AND SPRING.. R-21
REAR SIDE MARKER LIGHT ....................... T-48
REAR SIDE WINDOW REGULATOR AND . . . . . . . . .
AI .,.n
INDEX
Q
QUARTER WINDOW GLASS . . . . . . . . . . . . ..a........ S-62
R
RADIATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
kiLA33 ........................................................ a-- I I
REAR SPEAKER ........................................... T-99
REAR SPOILER ............................................ s-41
REAR STABILIZER.. ..................................... R-27
REAR SUSPENSION .................................... R-20
REAR WINDOW GLASS ............................... S-63
REAR WINDOW DEFROSTER.. .................... T-74
REAR WINDOW DEFROSTER SWITCH ....... T-77
REAR WIPER AND WASHER ...................... S-74
REAR WASHER MOTOF
REAR WIPER AND WASHER SWITCH . . S-77
REAR WIPER MOTOR ............................ s-77
RELEASE BEARING (CLUTCH). . . . . . . . . . ..s..... H-17 I . . . . . . . . ...*. .*......*..
SEAT BELT.. ........................................ S-100,102
BUCKLE SWITCH.. ............................... S-l 02
SEAT ........................................................... s-110
SEPARATOR (FUEL) .................................. F-l 40
SHUTTER VALVE ACTUATOR (VICS) ........ F-l 18
SLIDING SUNROOF ..................................... S-80
MOTOR ASSEMBLY ............................... S-81
SUNROOF RELAY.. ................................ S-82
SUNROOF SWITCH.. .............................. S-82
SOLENOID VALVE
(PRESSURE REGULATOR CONTROL) .... F-135
SOLENOID VALVE (PURGE CONTROL). .. F-140
SOLENOID VALVE (VICS) .......................... F-l 18
SPARK PLUGS ............................................ G-18
-II__