spark plugs replace MAZDA 323 1992 Workshop Manual Suplement

A SCHEDULED MAtNTENANCE SERVtCES (Europe)
Maintenance Number of months or km (miles), whichever comes first
Months” - 6 12 18 24 30 36 42 48
Kllometers 1,000 10,000 20,000 30,000 40,000 50,000 60,000 70,000 80,000
{Miles)
(600) (6,000) f[t2,000) (18,000) (24,000) (3U,OOO) (36,000) (42,000) {48,000), Engine
Intake and exhaust manrfold nuts (Bolts)
Drive belts”
i Engine trmlng beltW3
Engine oil (Turbo)‘4
01 filter
l *
Cool!ng system (Includtng
coolant level adlustment)
Engrne coolant T T T
A A A
A A
Replace every 100,000 km (60,000 miles)
Replace every 5,000 km (3,000 miles) or 6 months
R R R R R 1 R R R
I I I I
I
Replace every 2 years Fuel system
Idle speed
Air cleaner element * 5
Fuel
falter
Fuel Ilnes and hoses Ignition system
A f 1
I R I R
R R
I I f t I ~
lnlttal rgnrtloh trmlng 1 I I I I I I I I
Spark plugs A
A. A A
Spark plugs (Only for Sweden) Adjust every 30.000 km (t8.000 mrls) Evaporative emission control system
Throttle sensor Throttle sensor (Only for Sweden)
Evaporative system
Evaporatrve system (Only for Sweden) 1 A 1 1 A 1 1 A 1 ) A
Adjust every 80,000 km (48,000 miles)
1 I 1 1 I’ 1 1 I 1 1 I
Inspect every 80,000 km (48,000 mites) Electrical system
Battery electrolyte level and specific gravity 1 I f I I I
All Electrical system
l ’ 1 I
I 1 I I I
1 . 1 I I
Headlight alrgnment 1 A A A . A. Chassis and body
t 3EOAX-303
A-4 Chas
SW31 Rear
Tires
Hing
Seat

TROUBLESHOOTING GUIDE F3
8
1 ROUGH IDLE/ENGINE STALLS AT IDLE - ALWAYS
DESCRtP- 1 l Engine starts normally but stalls or vibrates excessively at idle in every condition
TION
[TROUBLESHOOTiNG HlNTSJ @ Air/Fuel mixture tw lean @ Incorrect idle-speed l ldiespeed misadjustment l Idle-speed control malfunction
$I One or more spark plugs not firing
9 Low engine compression
B Airflow meter stuck l Air leakage l Fuel injection control malfunction
*Low fuel line pressure
@ One or more injectors clogged or not
@ Low intake air amount operating
INSPECTION
Is “00” displayed on Self-Diagnosis
Checker with ignition switch ON?
1
SYSTEM SELECT: 1
ACTION
Go to next step
Service Code No. displayed Check for cause (Refer to specified
check sequence) c7 page F3-16
“88” flashes
Check ECU terminal IF voltage
(17 page F345
--.
‘\.
Voltage: Battery v&age
(Ignition switch ON)
4 If UK, replace ECU IT page F3-2 c3 If not OK, check wiring
(ECU - Self-Diagnosis Checker) Y -SELECT SW: A
Are ECU terminal voltages OK
(especially 20, 20, and ZQ)?
D page F3-45 Yes
Gu to next step
NO Check for cause
Disconnect each high-tens&on lead at idle: does
engine speed decrease equally at each cylindeR Yes Go to Step 9
NO Go to next step
Is injector operating sound heard at idle? [ Yes Go to Step 7
t- NO Stop engine and go to next step
Yes Check if injector resistance is OK
CT page F3-41 Is there battery voltage at each injector connec-
tor (No.1 (P), No.2 (R), No.3 QV), No.4 (0)) with
ignition switch ON?
Resktance: Approx. 2.110
(at 20*C [68*F))
4 if it is, check wiring
(ECU - Injector)
c3 If it is not, replace itijector
Go to next step
NO
Is there battery v&age at injector resistor (W/R)
I .Yes
with ignition switch ON? Check mjeotor resistor
4 tf OK, check for short circuit in wir-
ing (Injector resistor-Injector)
e3 If not OK,’ replace injector resistor
Check for open circuit in wiring (Main
relay (FUEL INJ relay)-Injector resistor)
Go to next step
t NO 1
Is strong blue soark visible at each disconnected Yes
‘Check ‘high-tension lead
4 If UK. check distributor cap and
rotor .
c3 If not OK, replace high-tension lead
‘-F3-29

F3 TROUBLESHOOTING GUIDE
3TEI ACTION
Is fuel line pressure correct at Idle?
*
Fuel line pressure: 265-314 kPa
12.7-3.2 kgf/cm’, 38-46 psi]
(Two vacuums hose to pressure regulator
disconnected)
304-392 kPa [ 3.1-4.0 kgf/cm’, 44-57 psi 1
(Upper vacuum hose to pressure regulator
disconnected)
INSTALL CLAMPS Yes Go to next step
No Low pressure
Check fuel line pressure while pinching
fuel return hose
4 If pressure quickly Increases,
check pressure regulator
e If pressure gradually Increases,
check for clogging between fuel
pump and pressure regulator
If hose is not clogged, check fuel
pump maxrmum pressure
Connect System Selector to diagnosis connector
and set Test Switch to SELF TEST; is ignition
tlmlng at idle correct after warm-up?
Ignition timing (BTDC): 10 f lo Yes Go to next step
No Adjust tgnrtkon system
8 Dtsconnect water thermosensor connector; does
engine condrtlon Improve? Yes Replace water thermosensor
No
Try known good ECU. does condltlon
Improve?
w page F3-13
Go to next step
Check if injector resistance is OK
w page F3-42 9 Is jqector operating sound heard at Idle?
Yes
No
Resistance: Approx. 2.11 Q
(at 20°C 168*F])
4 If it is, check wlnng
(ECU - Injector)
c3 If it Is not, replace injector
Go to next step IO
Yes Is engine compressron cprrect?
w Section G
No
Engine compression:
1059 kPa 110.8 kgf/cm2, 152 psi)-300 rDm
is strong blue spark vrslble at each disconnected
hrgh-tension lead?’ Check engine
3 Section B2
17
Yes Go to next step
No Check high-tension lead
w Section G
c3 If UK, check distrrbutor cap and
rotor
3 If not OK, replace htgh-tensron lead
Try known good ‘ECU: does condrtron
Improve7
w page F3-3 12 Are spark plugs.OK?
w Section G
l Wear and carbon butld up l Piug gap l Damage Yes
NO
Clean, adjust
13EOi3.334
F3-32.

TROUBLESHOOTING GUIDE
(at 20% [SS*F])
If It is, check wiring
e If OK, check distributor cap and
rotor
e If not OK, replace high-tensjon lead
12 Are spark plugs UK? Yes Is engine compresston correct? w Section 82
w Section G
. Wear and carbon burld up Engine compression: l Plug gap 1059 kPa 110.8 kgf/cm*, 352 psi I-300 rpm l Damage
4 If OK, go to next step
4 If not OK, check for cause
w Section 82
c
NO Clean, adjust
13 Check for injector leakage Yes
Replace injector
No Go to next step
14 Try known good ECU: does condition improve?
w page F3-45
----- Am.*
F3-34
~ROlJ8L Engine so:
3 Idle-sp.
T> fuel-cL