Mazda1992–1997Technical specifications

626 2.0: Technical specifications

Workshop data for the 2-litre diesel (engine code RF-CX). Covers engine, fluids, brakes, service, torques and air conditioning: the figures to check before a job or a parts order.

Summary

Match the engine code (RF-CX) to the vehicle before ordering parts or applying these figures.

Vehicle specifications

Overview

Make: Mazda
Model: 626
Years: 1992–1997
Fuel: Diesel
Engine code: RF-CX

Performance & efficiency

Power: 55 kW (75 hp)
Engine size: 1,998 cc
Cylinders: 4 · OHC
Compression ratio: 21.1:1

Fluids & capacities

Engine oil (with the filter): 5.5 litres

All 107 specifications below

Engine & identification

Vehicle identification

No. of cylinders Type	4/OHC
Capacity cc	1998
Compression ratio :1	21,1

Injection system

Fuel/injection pump assembly Make	Zexel
Pump type	Rotary
Injector nozzle Make	Zexel
Nozzle opening pressure - new/used bar	132
Leak rate (dribble) bar/secs	113/10

Injection sequence

The injection sequence for the Mazda 626 2.0 (1992–1997) is 1-3-4-2.

Injection sequence	1-3-4-2

Valve clearances

Valve clearances for the Mazda 626 2.0 (1992–1997) are 0,20-0,30 mm inlet and 0,30-0,40 mm exhaust, measured cold.

Valve clearance - INLET mm	0,20-0,30 cold
Valve clearance - EXHAUST mm	0,30-0,40 cold

Engine oil & fluids

Engine oil

The Mazda 626 2.0 (1992–1997) takes 5.5 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 2.7 litres. The specified oil is SAE 75W-90.

Grades, filling conditions and capacities

Lubricants and capacities — complete reference
Engine oil options
Ambient temperature range	➞10°C
Engine oil grade SAE	5W-30
Engine oil classification API/ACEA	CF/B2
Ambient temperature range	-15°C➞40°C
Engine oil grade SAE	10W-30
Engine oil classification API/ACEA	CF/B2
Engine with filter(s) litres	5.5
Other lubricants and capacities
Manual transmission oil grade SAE	75W-90
Manual transmission litres	2.7
Automatic transmission fluid Type	Dexron II
Automatic transmission (dry fill) litres	6.2
Brake fluid Type	DOT 3
Power steering fluid Type	Dexron II

Brakes & wear limits

Brake disc thickness

Brake discs on the Mazda 626 2.0 (1992–1997) are replaced at a minimum thickness of 22 mm (ventilated) front and 8 mm rear.

Minimum disc thickness for replacement - ventilated Front	22 mm
Minimum disc thickness for replacement Rear	8 mm

Brake disc and drum dimensions

Disc runout Front	0,10 mm
Disc runout Rear	0,10 mm
Minimum pad thickness Front	1 mm
Minimum pad thickness Rear	1 mm
Parking brake travel No. of notches	5-7

Service & electrical

Battery

The Mazda 626 2.0 (1992–1997) uses a 12 V, 80 Ah battery (reserve capacity 130 minutes).

Battery V/RC(Ah)	12/130 (80)

Glow plugs

Glow plugs for the Mazda 626 2.0 (1992–1997): Bosch 0 250 202 056, Champion CH97 and Lucas/CAV HDS241.

Glow plug nominal rating V/A	11/12
Glow plug - part no. Bosch	0 250 202 056
Glow plug - part no. Champion	CH97
Glow plug - part no. Lucas/CAV	HDS241

Tuning and emissions

Plunger travel (pump) mm ABDC	1,0
Crankshaft position (n = ATDC) °BTDC	4 n
Adjusting method Engine/Pump	Pointer/Dial gauge
Idle speed rpm	725±25
Rated no load speed rpm	5100
Oil temperature °C	60
Idle speed - for smoke test rpm	700-750
Governed speed range - for smoke test rpm	5000-5200
Maximum time at governed speed secs	1,0
Test mode A/B	B
Probe type 1/2	1
Smoke opacity - EU limit m-1 (%)	2,50 (66)

Starting and charging

Starter motor Make	Mitsubishi
Starter motor Type	2,0/2,2 kW
Maximum cranking amps A	216-264
Alternator Make	Mitsubishi
Alternator output A/V/rpm	75/14/2500
Regulated voltage V	14,1-14,7

Service checks and adjustments

Compression pressure bar	26,5-29,4
Turbo boost pressure bar/rpm	0,82/3000
Oil pressure bar/rpm	3,4/3000
Radiator cap bar	0,95-1,25
Thermostat opens °C	83,5-86,5
Drive belt tension - alternator/PAS/AC mm	6,5-13,0/9,5-13,5
Drive belt tension - AC mm	8,5-15,0

Tightening torques

Cylinder head bolt torque

The cylinder head bolts on the Mazda 626 2.0 (1992–1997) are tightened in 3 stages: 30 Nm, then 90°, then a final 90°.

Cylinder head
Maximum bolt length	114,5 mm
Tighten	30 Nm
Tighten	90°
Tighten	90°

Other engine tightening torques
Cylinder head instructions	—
Main bearings Renew bolts/nuts	No
Main bearings Stage 1	40 Nm
Main bearings Stage 2	85 Nm
Big end bearings Renew bolts/nuts	No
Big end bearings Stage 1	33 Nm
Big end bearings Stage 2	67 Nm
Oil pump to cylinder block	M8=22 Nm M10=45 Nm
Sump bolts	8-11 Nm
Sump drain bolt	29-41 Nm
Flywheel/driveplate	177-186 Nm
Clutch pressure plate	18-26 Nm
Crankshaft pulley/damper centre bolt	167-176 Nm
Camshaft sprocket/gear	55-65 Nm
Camshaft carrier/cap	20-26 Nm
Camshaft/rocker cover	7-10 Nm
Inlet manifold to cylinder head	19-25 Nm
Exhaust manifold to cylinder head	22-26 Nm
Injector/clamp	59-68 Nm
Injector pipe unions	26-33 Nm
Injector nozzle to holder	29-49 Nm
Fuel/injection pump sprocket/gear	59-68 Nm
Fuel/injection pump flange	19-25 Nm
Fuel/injection pump mounting	19-25 Nm
Glow plugs	15-19 Nm
Chassis tightening torques
Front hub	236-318 Nm
Rear hub	177-235 Nm
Steering track rod end	32-44 Nm
Brake caliper to carrier Front	36 Nm
Brake caliper/carrier to hub Front	88 Nm
Brake caliper to carrier Rear	20 Nm
Brake caliper/carrier to hub Rear	55 Nm
ABS sensor Front	16-23 Nm
ABS sensor Rear	16-23 Nm
Road wheels	88-117 Nm

Air conditioning

No. of AC service connectors	2
Air conditioning restrictor type	Expansion valve
Compressor clutch/magnetic coupling	Yes
Compressor variable displacement solenoid	No
Air conditioning refrigerant Type	R12
Air conditioning refrigerant quantity grams	775±25
Air conditioning oil Type	Atmos GU 150
Air conditioning oil quantity cm³	150

Frequently asked questions

What is the injection sequence of the Mazda 626 2.0?

The injection sequence for the Mazda 626 2.0 (1992–1997) is 1-3-4-2.

What glow plugs does the Mazda 626 2.0 use?

Glow plugs for the Mazda 626 2.0 (1992–1997): Bosch 0 250 202 056, Champion CH97 and Lucas/CAV HDS241.

How much oil does the Mazda 626 2.0 take?

The Mazda 626 2.0 (1992–1997) takes 5.5 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 2.0?

Valve clearances for the Mazda 626 2.0 (1992–1997) are 0,20-0,30 mm inlet and 0,30-0,40 mm exhaust, measured cold.

What is the cylinder head torque for the Mazda 626 2.0?

The cylinder head bolts on the Mazda 626 2.0 (1992–1997) are tightened in 3 stages: 30 Nm, then 90°, then a final 90°.

What is the minimum brake disc thickness for the Mazda 626 2.0?

Brake discs on the Mazda 626 2.0 (1992–1997) are replaced at a minimum thickness of 22 mm (ventilated) front and 8 mm rear.