warning MAZDA 626 1987 Owner's Manual

2A OIL FILTER, OIL COOLER
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4. Install the drain plug and a new gasket.
5. Refill the engine with the specified type and amount
of oil.
6. Refit the oil filler cap.
Oil pan capacity:
3.6 liters (3.8 US qt, 3.2 Imp qt)
7. Recheck the oil level after the engine has been run.
76G02A-006
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86U02X-008
76G02A-007
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76G02A-008
OIL FILTER
REPLACEMENT
1. Remove the oil filter with a suitable wrench.
2. Use a clean rag to wipe off the mounting surface
on the engine.
3. Apply a small amount of engine oil to the rubber
seal of the new filter.
Warning
Be careful that the engine and filter are very
hot.
4. (DOHC)
Install the oil filter until the rubber seal contacts the
base and then tighten the filter
1
and
1
/6 turn with
a wrench.
(SOHC)
Install the oil filter and tighten it by hand only. Do
not use a wrench.
5. Start the engine and inspect around the filter seal
for leaks.
6. Check the oil level and add oil if necessary.
Oil filter capacity:
0.20 liters (0.21 US qt, 0.18 Imp qt)...DOHC
0.30 liters (0.32 US qt, 0.26 Imp qt)...SOHC

OIL
COOLER

(DOHC, 12-valve,
ECE
8-valve)

REMOVAL AND INSTALLATION
Remove in the sequence shown in the figure.
Install in the reverse order of removal.
1. Water hose
2. Oil filter
3. Nut
4. Oil cooler
Nut tightening torque:
29—39
N
m (3.0—4.0 m-kg, 22—29 ft-lb)
2A-6

OUTLINE 2B
SPECIFICATIONS
Item Engine model RF-CX RF-N

Lubrication system Force-fed
Type Trochoid gear
Oil pump Gear width mm (in) 7 (0.28)
Regulated pressure kPa (kg/cm2,
psi)
510-618 (5.2 -6.3, 74—90)
Oil filter
Type Combined, paper element
Oil filter
Relief pressure differential kP (kg/cm2,
psi)
78-118 (0.8--1.2, 11-17)
Oil cooler Type Water cooled, 10 layer Water coold,
4
layer
Oil filter body
Regulated pressure kPa (kg/cm2,
psi)
402—481
(4.1
-4.9, 58—70)
Oil filter body
Oil cooler relief pressure differential kPa (kg/cm2, psi) 177-216 (1.8 -2.2, 26-31)
Oil warning lamp activation pressure kPa (kg/cm2,
psi)
29 (0.3, 4.3)
Oil capacity
Total (dry engine)
Oil pan
Oil filter
liters (US qt, Imp
qt)

liters (US qt, Imp
qt)

liters (US qt, Imp
qt)

6.1 (6.4, 5.4)
5.0 (5.3, 4.4)
0.5 (0.52, 0.44)
Engine oil type API service CD CC,
CD
76G02B-003
Recommended SAE Viscosity
CC) Temperature
—30 —20 —10 0 10 20 30 40 50 i i i i i i i ii CC) Temperature i i II i i i i —20 0 20 40 60 80 100 120
Engine oil
5W-30 >
Engine oil
< 10W-30 >
< 20W-20 >
< 15W-40 >
Engine oil
Engine oil
Temperature range anticipated before next oil change, °C(°F)
76G02B-004
2B-3

2B TROUBLESHOOTING GUIDE
TROUBLESHOOTING GUIDE
Problem Possible Cause Remedy Page
Engine hard
starting

Improper engine
oil

Insufficient engine
oil

Replace
Add
oil

2B—
6

2B—
5
Excessive oil
consumption

Oil working
up or
working down
Oil leakage
Refer
to
Section
1C

As described below

Oil leakage
Loose drain plug
or
damaged washer
Faulty seal
at oil
pan and cylinder block
Damaged cylinder head cover and
its
seal
Loose
oil
pump body bolt, cylinder head cover bolt,
or

oil pan bolt
Damaged front housing gasket,
or
cylinder head gasket
Faulty
oil
seal(s)
Loose
oil
filter
Loose
or
damaged
oil
pressure switch
Tighten
or
replace
Repair
Replace
Tighten
Replace
Replace
Tighten
Tighten
or
replace
2B—10
2B—10
2B-
6
Oil pressure drop
Oil leakage
Insufficient
oil

Worn and/or damaged
oil
pump gear
Worn plunger (inside
oil
pump)
or
weak spring
Clogged
oil
strainer
Excessive
oil
clearance between main bearing
or
con-
necting
rod
bearing
As described above
Add
oil

Replace
Replace
Clean
Refer
to
Section
1C

2B-
5

2B—13
2B—14

Warning lamp il-
luminates while
engine running

Oil pressure drop
Malfunction
of oil
pressure switch
Malfunction
of
electrical system
As described above
Refer
to
Section
15

Refer
to
Section
15
76G02B-005
2B—4

2B
ENGINE OIL, OIL
FILTER
86U02X-006
76G02B-010
86U02X-008
ENGINE OIL
REPLACEMENT
1. Warm up the engine to the normal operating tem-
perature and stop it.
2. Remove the oil filler cap and the oil pan drain plug.
3. Drain the oil into a suitable container.
Warning
Be careful when draining, the oil is very hot.
4. Install the drain plug and a new gasket.
Tightening torque:
29—41 N-m (3.0—4.2 m-kg, 22—30 ft-lb)
5. Refill the engine with the specified type and amount
of oil.
6. Refit the oil filler cap.
Oil pan capacity:
5.0 liters (5.3 US qt, 4.4 Imp qt)
7. Recheck the oil level after the engine has been run.

OIL
FILTER
REPLACEMENT
1. Remove the oil filter with a suitable wrench.
2. Use a clean rag to wipe off the mounting surface
on the engine.
3. Apply a coat of engine oil to the filter rubber seal.
4. Install the oil filter until the rubber seal contacts the
oil cooler by hand. Then tighten it a 7/6 turn fur-
ther with a band type wrench.
5. Start the engine and inspect around the filter seal
for leaks.
6. Check the oil level and add oil if necessary.
Oil filter capacity:
0.50 liters (0.52 US qt, 0.44 Imp qt)
76G02B-011
2B—6

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

4A FUEL SYSTEM
FUEL TANK
Removal
1. Remove the rear seat cushion.
2. Remove the cover and disconnect the fuel tank
gauge unit connector.
3. Disconnect the fuel main and return hoses.
4. Raise the vehicle and support it with safety stands.
5. Remove the fuel level gauge unit assembly.
Warning
a) When repairing the fuel tank, clean it
thoroughly with steam to remove all explo-
sive gasoline and fumes.
b) Use of fire is strictly prohibited while work-
ing on the fuel tank.
6. Drain the fuel.
7. Disconnect the remaining hoses.
8. Remove the fuel tank.
Inspection
1. Check the fuel tank for cracks and corrosion.
2. If any defect is found, repair or replace the tank.
3. Check for leaks.
Torque Specifications
76G04A-054
4A—36
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76G04A-052
76G04A-053
Installation
Install in the reverse order of removal.

EGR SYSTEM 4A
TROUBLESHOOTING
Note
Make the system inspection first. If no problem is found, continue with the next inspec-
tion of the Troubleshooting Guide. (Refer to pages 4A—22.)
Possible cause System inspection EGR control valve Water thermo valve
Page 4A—65 4A—65 4A—66
Checking order 1 2 3
76G04A-123
76G04A-124
76G04A-125
System Inspection
1. Start the engine.
2. Accelerate the engine while it is still cold and check
that the diaphragm of the EGR control valve does
not move.
3. Warm up the engine to normal operating temper-
ature and run it at idle.
Warning
Be careful when checking the EGR control
valve, the surrounding area is very hot.
4. Accelerate the engine and check that the di-
aphragm of the EGR control valve moves.
EGR Control Valve (ATX)
(No. 1)
1. Manually actuate the valves by pushing on the di-
aphragm with finger.
2. Check that the spring resistance is present and the
diaphragm moves freely with no sticking or
binding.
3. Warm up the engine and run it at idle.
4. Connect a vacuum pump to the valve and apply
vacuum.
5. Check that the engine runs roughly or stalls at more
than the specified vacuum.
Specification:
70—90 mmHg (2.8—3.5 inHg)
6. If not correct, replace the EGR control valve.
76G04A-126
4A—65

4B SWITCH MONITOR FUNCTION
Headlight switch
76G04B-030
Rear defroster switch
76G04B-031
Inhibitor switch
76G04B-032
Water thermo switch circuit (not included in switch inspection)
Warning
4B—28

FUEL SYSTEM 4B
Pressure .
regulator ^^ \ To multi-pressure tester
How to Connect Multi-Pressure Tester
Warning
Before connecting the SST, release the fuel
pressure from the fuel system to reduce the
possibility of injury or fire. (Refer to page
4B—45.)
1. Disconnect the negative battery terminal.
2. Disconnect the fuel main hose from the fuel filter.
3. Connect the SST between the fuel main hose and
fuel pump with the adapter.
Caution
Do not reverse the adapter connection.
4. Disconnect the vacuum hose from the pressure
regulator control solenoid valve. Connect the SST
vacuum hose with a three-way joint.
5. Connect the negative battery terminal.
6. Connect the SST to the battery.
86U04A-071
v *
- i\zLTest connector (Yellow)
7. Connect the terminals of the test connector (Yel-
low) with a jumper wire. Turn the ignition switch
ON to operate the fuel pump.
8. Check for fuel leaks.
Caution
After checking for fuel leakage, turn the igni-
tion switch OFF and disconnect the jumper
wire from the test connector.
86U04A-072
4B—47