Engine & identification
Vehicle identification
| No. of cylinders Type | 4/OHC |
|---|---|
| Capacity (Fiscal) cc | 1998 (1984) |
| Compression ratio :1 | 9,5 |
| Suitable for unleaded petrol | Yes |
| Minimum octane rating RON | 95 |
| Ignition system Type | HEI |
| Ignition system Description | Trans-i |
| Trigger location | Distributor |
| Fuel system Make | Hitachi |
| Fuel system Description | Carb-2V |
| Diagnostic socket | Yes |
Ignition system
| Ignition coil Make | Hanshin |
|---|---|
| Ignition coil supply voltage + with ballast V | 11,0 |
| Primary resistance Ohm | 1,04-1,27 |
| Secondary resistance Ohm | 7100-9700 |
| Distributor (ECM) Make | Mitsubishi |
Firing order
The firing order for the Mazda 626 Estate 2.0 (1987–1992) is 1-3-4-2.
| Firing order | 1-3-4-2 |
|---|
Valve clearances
Valve clearances on the Mazda 626 Estate 2.0 (1987–1992) are hydraulic — they self-adjust, so no manual clearance figure applies.
| Valve clearance - INLET mm | Hydraulic |
|---|---|
| Valve clearance - EXHAUST mm | Hydraulic |
Engine oil & fluids
Engine oil
The Mazda 626 Estate 2.0 (1987–1992) takes 3.9 litres of engine oil with the filter.
See the reference table for the complete engine oil entries and their conditions.
Manual gearbox
The manual gearbox has a listed capacity of 3.4 litres. The specified oil is SAE 75W-90.
Coolant
The listed total cooling-system capacity is 7.5 litres.
Grades, filling conditions and capacities
| Engine oil options | |
|---|---|
| Ambient temperature range | ➞0°C |
| Engine oil grade SAE | 5W-30 |
| Engine oil classification API/ACEA | SJ/A2 |
| Ambient temperature range | -25°C➞ |
| Engine oil grade SAE | 10W-30 |
| Engine oil classification API/ACEA | SJ/A2 |
| Engine with filter(s) litres | 3.9 |
| Other lubricants and capacities | |
| Manual transmission oil grade SAE | 75W-90 |
| Manual transmission litres | 3.4 |
| Automatic transmission fluid Type | Dexron II |
| Automatic transmission (dry fill) litres | 6.2 |
| Cooling system - total capacity litres | 7.5 |
| Brake fluid Type | DOT 3/4 |
| Power steering fluid Type | Dexron II |
| Power steering fluid litres | 1.0 |
Brakes & wear limits
Brake disc thickness
Brake discs on the Mazda 626 Estate 2.0 (1987–1992) are replaced at a minimum thickness of 18 mm (ventilated) front and 8 mm rear.
| Minimum disc thickness for replacement - ventilated Front | 18 mm |
|---|---|
| Minimum disc thickness | |
| Minimum disc thickness for replacement Rear | 8 mm |
| Maximum drum diameter for replacement Rear | 230,1 mm |
Brake disc and drum dimensions
| Minimum disc thickness | |
|---|---|
| Disc runout Front | 0,10 mm |
| Disc runout Rear | 0,10 mm |
| Minimum pad thickness Front | 2 mm |
| Minimum pad thickness Rear | 1 mm |
| Minimum shoe thickness Rear | 1 mm |
| Parking brake travel No. of notches | 5-7 |
Service & electrical
Ignition timing
Basic ignition timing for the Mazda 626 Estate 2.0 (1987–1992) is 6°±1° BTDC at 800 rpm.
| Ignition timing | Without vacuum |
|---|---|
| Ignition timing - basic BTDC °Engine/rpm | 6±1/800 |
Battery
The Mazda 626 Estate 2.0 (1987–1992) uses a 12 V, 60 Ah battery (reserve capacity 90 minutes).
| Battery V/RC(Ah) | 12/90 (60) |
|---|
Spark plugs
The Mazda 626 Estate 2.0 (1987–1992) uses NGK BCPR6-VG 90-=BKR6E spark plugs with a 0,8 mm electrode gap.
| Spark plugs Original equipment | NGK |
|---|---|
| Spark plug Type | BCPR6-VG 90-=BKR6E |
| Electrode gap mm | 0,8 |
| Spark plugs Make | Autolite |
| Spark plug Type | APP64 |
| Electrode gap mm | 0,8 |
| Spark plugs Make | Beru |
| Spark plug Type | 14FR-7DU |
| Electrode gap mm | 0,8 |
| Spark plugs Make | Bosch |
| Spark plug Type | FR7DC |
| Electrode gap mm | 0,8 |
| Spark plugs Make | Champion |
| Spark plug Type | RC9YC4 |
| Electrode gap mm | 1,1 |
| Spark plugs Make | NGK |
| Spark plug Type | BCPR6-VG 90-=BKR6E |
| Electrode gap mm | 0,8 |
Tuning and emissions
| Ignition advance | Without vacuum and basic timing |
|---|---|
| Ignition advance checks °Engine/rpm | 0-2/1200 |
| Ignition advance checks °Engine/rpm | 10-14/4000 |
| Ignition advance checks °Engine/rpm | 16-20/5000 |
| Vacuum check | Ignition timing advances |
| Vacuum range °Engine | 11-15 |
| Vacuum starts mbar | 160 |
| Vacuum ends mbar | 400 |
| Idle speed rpm | 800-850 |
| Idle speed - alternative rpm | AT=900-950 |
| Oil temperature °C | 60 |
| CO level at idle speed - tailpipe Vol. % CO | 2,0±0,5 |
| HC level at idle speed ppm | 300 |
| CO2 level at idle speed Vol. % CO2 | 13-16 |
| O2 level at idle speed Vol. % O2 | 0,5-2,0 |
Starting and charging
| Starter motor Make | Mitsubishi |
|---|---|
| Starter motor Type | 1,4 kW |
| Maximum cranking amps A | 162-198 |
| Alternator Make | Nippon Denso |
| Alternator output A/V/rpm | 70/14,5/3000 |
| Regulated voltage V | 14,1-14,7 |
Service checks and adjustments
| Compression pressure bar | 10,0-14,2 |
|---|---|
| Oil pressure bar/rpm | 2,9-3,9/3000 |
| Radiator cap bar | 0,74-1,03 |
| Thermostat opens °C | 87-89 |
| Drive belt size - alternator mm | 4PKx870 |
| Drive belt size - PAS/AC mm | 5PKx1010 |
| Drive belt tension - alternator/PAS/AC mm | 7-9/9-11 |
Fuel system
| Fuel pump delivery pressure bar | 0,20-0,29 |
|---|
Tightening torques
Cylinder head bolt torque
The cylinder head bolts on the Mazda 626 Estate 2.0 (1987–1992) are tightened in 3 stages: 20-26 Nm, then 50-56 Nm, then a final 80-86 Nm.
| Cylinder head | |
|---|---|
| Renew bolts | No |
| Tighten | 20-26 Nm |
| Tighten | 50-56 Nm |
| Tighten | 80-86 Nm |
| Cylinder head instructions | — |
|---|---|
| Other engine tightening torques | |
| Main bearings Renew bolts/nuts | No |
| Main bearings Stage 1 | 41 Nm |
| Main bearings Stage 2 | 82-88 Nm |
| Big end bearings Renew bolts/nuts | No |
| Big end bearings Stage 1 | 33 Nm |
| Big end bearings Stage 2 | 65-69 Nm |
| Oil pump to cylinder block | — |
| Oil pump to cylinder block | |
| Sump bolts | 7-11 Nm |
| Sump drain bolt | 30-41 Nm |
| Flywheel/driveplate | 100 Nm/100 Nm |
| Clutch pressure plate | 18-26 Nm |
| Crankshaft pulley/damper centre bolt | 157-167 Nm |
| Camshaft sprocket/gear | 47-65 Nm |
| Camshaft carrier/cap | 18-26 Nm |
| Camshaft/rocker cover | 6-8 Nm |
| Inlet manifold to cylinder head | 20-30 Nm |
| Exhaust manifold to cylinder head | 20-30 Nm |
| Spark plugs | 15-23 Nm |
| Chassis tightening torques | |
| Front hub | 235-319 Nm |
| Rear hub | 98-117 Nm |
| Steering track rod end | 29-44 Nm |
| Brake caliper to carrier Front | 31-41 Nm |
| Brake caliper/carrier to hub Front | 78-98 Nm |
| ABS sensor Front | 20 Nm |
| ABS sensor Rear | 20 Nm |
| Road wheels | 88-118 Nm |
Air conditioning
| Air conditioning refrigerant Type | R12 |
|---|---|
| Air conditioning refrigerant quantity grams | 800 |
| Air conditioning oil Type | DS-83P |
| Air conditioning oil quantity cm³ | 150 |
Frequently asked questions
What is the firing order of the Mazda 626 Estate 2.0?
The firing order for the Mazda 626 Estate 2.0 (1987–1992) is 1-3-4-2.
What spark plugs does the Mazda 626 Estate 2.0 use?
The Mazda 626 Estate 2.0 (1987–1992) uses NGK BCPR6-VG 90-=BKR6E spark plugs with a 0,8 mm electrode gap.
How much oil does the Mazda 626 Estate 2.0 take?
The Mazda 626 Estate 2.0 (1987–1992) takes 3.9 litres of engine oil with the filter. See the reference table for the complete engine oil entries and their conditions.
What are the valve clearances for the Mazda 626 Estate 2.0?
Valve clearances on the Mazda 626 Estate 2.0 (1987–1992) are hydraulic — they self-adjust, so no manual clearance figure applies.
What is the cylinder head torque for the Mazda 626 Estate 2.0?
The cylinder head bolts on the Mazda 626 Estate 2.0 (1987–1992) are tightened in 3 stages: 20-26 Nm, then 50-56 Nm, then a final 80-86 Nm.
What is the ignition timing for the Mazda 626 Estate 2.0?
Basic ignition timing for the Mazda 626 Estate 2.0 (1987–1992) is 6°±1° BTDC at 800 rpm.