check oil MAZDA 626 1987 Manual Online

4C ESA CONTROL SYSTEM
COMPONENT DESCRIPTION
Component Function Remark
Air flow sensor Detects amount of intake air;
sends signal to engine control unit
Distributor Has Ne and G signal pick-up and distributes high voltage to spark plugs
Engine control unit Detects signals from input sensors and switches; decides best ignition timing
Idle switch Detects when throttle valve fully closed; sends signal to engine control unit Installed on throttle body
Igniter Receives spark signal from engine control unit and generates high voltage in ignition coil
Ignition switch
(ST position) Sends engine cranking signal to engine con-trol unit
Ne signal pick-up Detects crank angle at 180° intervals; sends signal to engine control unit Installed in distributor
Knock sensor (leaded fuel) Detects engine knocking; sends signal to knock control unit
Throttle sensor Detects throttle opening angle; sends signal to engine control unit Installed on throttle body
76G04C-140
TROUBLESHOOTING
Check the condition of the wiring harness and connectors before checking the sensors or switches.
Note
If no problem is found, continue with inspection of the next system of the troubleshooting
Guide. (Refer to page 4C—10 and 11)
Possible cause
Page
Symptom
Air flow sensor Igniter Engine control
unit terminal Knock sensor Possible cause
Page
Symptom
Air flow sensor Igniter
1X
Knock sensor Possible cause
Page
Symptom
4C—103 Refer to section 5 4C—98 4C—109
Hard start or won't start (Cranks OK) 3 1 2 —
Knocking — 1
76G04C-141
4C-76

4D ON-VEHICLE MAINTENANCE
ON-VEHICLE MAINTENANCE
76G04D-004
AIR CLEANER ELEMENT
Check the air cleaner element for excessive dirt, dam-
age, or oil. Replace if necessary.
Caution
(Wet type)
Do not clean the air cleaner element with com-
pressed air, replace if necessary.
(Dry type)
When cleaning the air cleaner element, blow
dust off from the inside first, then blow off the
outside.
(General)
1. Loosen the drain plug of the sedimenter and let
the water drain. If necessary loosen the air bleed-
ing plug.
2. Bleed air from the sedimenter.
AIR BLEEDING
From Fuel Tank to Fuel Filter
1. Loosen the air bleeding plug of the fuel filter.
2. Pump the priming pump until no air bubbles flow
from the air bleeding plug hole.
3. Depress the priming pump and tighten the air
bleeding plug.
Note
Open only the air bleeding plug of the filter.
From Fuel Filter to Injection Pump
Pump the priming pump until it becomes hard to
pump.
76G04D-007
WATER DRAINING
(ECE)
1. Loosen the drain plug of the fuel filter.
2. Pump the priming pump.
3. Bleed air from the fuel filter.
4D—4

INTAKE AIR SYSTEM 4D
AIR DUCT AND AIR CLEANER
Removal and Installation
1. Remove in the sequence shown in the figure.
2. Install in the reverse order of removal.
3. Check for air leakage.
1. Tire house cover
2. Air duct
3. Air hose
4. Air cleaner case
5. Air cleaner cover
6. Air cleaner
element
Inspection
Air cleaner
1. Inspect the silencer in the air cleaner cover for
damage.
2. Inspect the air cleaner element for excessive dirt,
damage, or oil. Replace if necessary.
Caution
(Wet type)
Do not clean the air cleaner element with com-
ressed air, replace it if necessary.
(Dry type)
When cleaning the air cleaner element, blow
dust off from the inside first, then blow off the
outside.
Air duct
Inspect the silencer in the air duct for damage. Re-
place if necessary.
76G04D-017
4D—8

4D SUPERCHARGING SYSTEM (RF-CX)
BOOST AIR TEMPERATURE SENSOR
Removal
Remove the boost air temperature sensor from the
compressed air funnel.
76G04D-039
Thermometer
Inspection
1. Place the boost air temperature sensor in oil.
2. Heat the oil and check continuity of the sensor with
an ohmmeter. Replace if necessary.
Continuity : over 150°C (302°F)
No continuity: below 143°C (289°F)
76G04D-040
Installation
Install the boost air temperature sensor in the com-
pressed air funnel.
Tightening torque:
29—39 N m (3.0—4.0 m-kg, 22—29 ft-lb)
76G04D-041
4D—17

4D FUEL SYSTEM
INJECTION PUMP
On-Vehicle Inspection
Fuel cut solenoid valve
1. Run the engine at idle.
2. Disconnect the solenoid valve connector, and let
the engine stop.
3. If the engine does not stop, replace the fuel cut
solenoid valve.
76G04D-055
Pick up coil
1. Disconnect the pick up coil connector.
2. Check for continuity of the coil using an ohmmeter.
3. Replace it if there is not continuity.
76G04D-056
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1 mm (0.39 in) Injection Timing Adjustment
Inspection
Check the injection timing. (Refer to page 4D—5.)
Injection timing
RF-CX: ATDC 10
RF-N : TDC 0°
76G04D-057
Adjustment
1. Loosen the injection pump mounting nut.
2. Loosen the injection pump bracket bolt.
76G04D-058
4D—24

VE-TYPE RF71 13 800C: 104749-0343 For RF-CX
# TEST OIL SAE Standard test oil (SEA 967C)
Fuel injection amount Chamber pressure and timer stroke Load sensing timer and overflowing quantity Measurenment
Item Pump speed (RPM) Fuel injection amount
(cm3/stroke)
Start 100 More than 55/1,000
Full load
600 33.9—38.9/1,000
Full load
1,000 48 9—50.9/1,000
Full load 2,150 39.7—44 7/1,000 Full load
2,250 32.7-37.7/1,000
Full load
2,550 8.0—15.0/1,000
Idling 360 7.6—10.6/1,000
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Pump speed (RPM) Chamber pressure
(kg/cm2)
Timer stroke (mm)
500 500
1,250 4.5—5.1 2.7—3.9
1,500 5.2—5.8 4 3-4.9
2,150 6.8—7 4 7.6-8.8
Item Fuel injectioon amount
(cm3/stroke)
Load sens-ing timer
Start 37.2-39.2/1,000 Load sens-ing timer End 32.2-34.2/1.000
Overflowing quantity 41.0—85.0/1.000
"Checking condition
Pump speed: 1,500 rpm
Lever: Full load
Measuring place Dimension (mm)
KF 5.7—5.9
K 3.2—3.4
MS 1.6-1.8

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100 600 1,000 1,250 1,500
Injection pump speed RPM
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2,150 2,250 2,550
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VE-TYPE RF79 13 800A: 104748-0343 For RF-N ENGINE
£ TEST OIL SAE Standard test oil (SEA 967C)
Fuel injection amount Chamber pressure and timer stroke Load sensing timer and overflowing quantity Measurenment
Item Pump speed (RPM)
Fuel injection amount
(cm3/stroke)
Start 100 More than 42/1,000
Full load
600 29.0—33.0/1,000
Full load
1.375 34.9—36.9/1,000
Full load 2,325 30 2—34.2/1,000 Full load
2,600 9.8—15 8/1,000
Full load
2,700 Max. 6 0/1,000
Idling 360 8-12/1,000
Pump speed (RPM) Chamber pressure
(kg/cm2)
Timer stroke
(mm)
600 2 2—2.8
1,375 4 4—5,0 3 9—4.5
1,800 5 6—6.2 6.1-7.3
2.325 6.9—7.5 7.2—8.4
Item Fuel injectioon amount
(cm3/stroke)
Load sens- Start 26.7-29.7/1,000
ing timer End 14.6—17.6/1,000
Overflowing quantity 46.3—90.3/1.000
'Checking condition
Pump speed: 1,375 rpm
Lever: Full load
Measuring place Dimension (mm)
KF 5.8—5.9
K 3.2—3 4
MS 1.4—1.6
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100 600
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1,375 1,800
Injection pump speed RPM
2,325 2,600 2,700
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FUEL SYSTEM 4D
76G04D-077
76G04D-078
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76G04D-079
Red paint
Injection Nozzle Disassembly
Disassemble the injection nozzle.
1. Nozzle holder
2. Adjusting shim
3. Pressure spring
4. Pressure pin
5. Distance piece
6. Nozzle
7. Retaining ring
Cleaning
Clean the parts in clean test oil.
Injection Nozzle Inspection
1. Check the needle valve, nozzle body, and other
parts for damage.
2. Hold the nozzle body upright and insert approxi-
mately two thirds of the needle valve, and check
that the needle valve drops to the valve seat by
its own weight.
Injection Nozzle Assembly
1. Assemble the injection nozzle.
Tightening torque of nozzle body:
29—49 N-m (3.0—5.0 m-kg, 22—36 ft-lb)
2. Check the injection starting pressure, and atomi-
zation. (Refer to page 4D—32.)
Injection Nozzle Installation
1. Install in the reverse order of removal, referring to
the installation note.
2. Check for fuel leakage.
Installation note
Nozzle gasket
Install a new gasket with the red face toward the
nozzle.
76G04D-080
4D-33

5
ENGINE ELECTRICAL SYSTEM
OUTLINE 5— 2
STRUCTURAL VIEW 5— 2
SPECIFICATIONS 5— 5
TROUBLESHOOTING 5— 7
BATTERY 5— 8
INSPECTION 5— 8
RECHARGE. 5— 8
SPARK PLUG 5— 9
REMOVAL AND INSTALLATION 5— 9
INSPECTION 5— 9
IGNITION COIL 5—10
INSPECTION 5—10
HIGH-TENSION LEAD 5—10
INSPECTION 5—10
DISTRIBUTOR 5—11
SPARK TEST 5—11
IGNITION TIMING 5—11
SPARK CONTROL 5—12
REMOVAL 5—14
DISASSEMBLY 5—15
INSPECTION 5—16
ASSEMBLY 5—17
INSTALLATION 5—18
H.E.I. TROUBLESHOOTING 5—19
IGNITER (FE DOHC) 5—20
INSPECTION 5—20
ALTERNATOR 5—21
CROSS SECTIONAL VIEW 5—21
CHARGING SYSTEM 5—22
TROUBLESHOOTING 5—23
REMOVAL 5—27
DISASSEMBLY 5—28
INSPECTION 5—32
ASSEMBLY 5—35
INSTALLATION 5—36
V-BELT TENSION 5—37
STARTER (GASOLINE ENGINE
0.85, 0.95 KW TYPE) 5—38
STARTING SYSTEM CIRCUIT 5—38
ON-VEHICLE INSPECTION 5—38
REMOVAL AND INSTALLATION 5—39
DISASSEMBLY AND ASSEMBLY 5—39
INSPECTION 5—40
PERFORMANCE INSPECTION 5—43
STARTER
(GASOLINE ENGINE, 1.4 KW TYPE) 5—45
STARTING SYSTEM 5—45
ON-VEHICLE UNSPECTION 5—45
REMOVAL 5—46
DISASSEMBLY 5—46
INSPECTION 5—49
ASSEMBLY 5—53
CHECKING OPERATION 5—54
INSTALLATION 5—55
STARTER
(DIESEL ENGINE, 2.0 kW TYPE) .... 5—56
STARTING SYSTEM CIRCUIT 5—56
ON-VEHICLE INSPECTION 5—56
REMOVAL AND INSTALLATION 5—57
DISASSEMBLY AND ASSEMBLY 5—57
INSPECTION 5—61
PERFORMANCE INSPECTION 5—64
STARTER
(DIESEL ENGINE, 2.2 kW TYPE).... 5—66
STARTING SYSTEM CIRCUIT 5—66
ON-VEHICLE INSPECTION 5—66
REMOVAL AND INSTALLATION 5—67
DISASSEMBLY AND ASSEMBLY 5—67
INSPECTION 5—71
PERFORMANCE INSPECTION 5—74
QUICK START SYSTEM (QSS) 5-76
COMPONENT LOCATION 5—76
CIRCUIT DIAGRAM 5—76
SYSTEM OPERATION 5—77
TROUBLESHOOTING GUIDE 5—78
CONTROL UNIT 5—79
GLOW PLUG RELAY 5—80
BLOW PLUG 5—80
WATER TEMPERATURE SWITCH.... 5—80
76g05x-001

TROUBLESHOOTING GUIDE 5
TROUBLESHOOTING GUIDE
Problem Possible cause Remedy Page
Starter does not turn at all, or Its turning speed Is too slow to start the engine.
Battery and related parts Poor contact of battery terminals Poor grounding of negative cable Voltage drop caused by discharged battery Insufficient voltage caused by battery malfunction
Clean and tighten Clean and repair Recharge Replace
5- 8
5- 8 5- 8
Ignition switch and related parts Poor contact of ignition switch Loose ignition switch wiring or connector Broken wire between ignition switch and magnetic switch
Replace Repair Repair or replace 5-38,45,56,66
Magnetic switch and related parts Loose wiring and/or connectors Burnt magnetic switch contact plate or improper contact Broken wire in magnetic switch pull-in coil Broken wire magnetic switch holding coil
Repair Replace
Replace Replace
5-38,45,56,66 5-43,54,64,74
5-43,54,64,74 5-43,54.64,74
Starter Poor contact of brushes
Fatigued brush spring Poor grounding of field coil Poor soldering of field coil Commutator mulfunction Grounded armature Worn parts
Adjust contact or replace Replace Replace Repair Repair or Replace Replace Replace
5-43,54,64,74
Starting problem Gasoline engine Insufficient battery capacity Malfunction of spark plug (s)
Loose positive terminal Damaged distributor cap or rotor Ignition coil malfunction laniter malfunction
Recharge Clean, adjust or replace Tighten Replace Replace Renlane
5— 8 5— 9
5—16 5—10 5-16,20
Diesel engine Insufficient battery capacity QSS svstem malfunction Recharge ReDlace 5— 8 5-76
Starter turns but pinion gear does not mesh with ring gear
Starter Tip of overrunning clutch pinion is worn Weakened overrunning clutch drive spring Worn overrunning clutch Improper sliding of spline
Worn bushing Worn ring gear
Replace Replace Replace Adjust contact and repair, or replace Replace ReDlace
5-40,54,70
Starter turns continuously (does not stop) Magnetic switch Sticking contact place of magnetic switch Layer shorting coil of magnetic switch Ignition switch does not return
Replace Replace Rfinlanfi
5-43,54,64,74 5-43,54,64,74
Misfiring Dirty or damaged spark plug (s) Malfunction of wiring, or open circuit Damaged distributor cap
Clean or replace Repair or Replace Replace
5- 9 5—10 5—16
Discharging of battery Alternator Loose drive belt Grounded or broken stator coil Broken rotor coil Poor contact of brush and slip ring
Malfunction of rectifier Malfunction of IC regulator Battery and related parts Insufficient or unsuitable battery electrolyte Malfunction of battery electrode (internal short-circuit) Poor contact of battery terminal (s) Excessive electric load
Adjust Replace Replace Clean, repair or replace Replace Replace
Adjust Replace
Clean and tighten Check power consump-tion and short circuit
5-37 5-32 5-32 5-32
5-34
5— 8 5- 8
5— 8
Overcharging of battery IC regulator malfunction Operating in extremely high temperature Replace Reoair
Poor acceleration Mis-adjusted ignition timing Distributor malfunction Adjust Repair or replace 5—11 5—11
Knocking Mis-adjusted ignition timing | Distributor malfunction Adjust Repair or replace 5—11 5—11
76G05X-003
5-7