Mazda1998–2003Technical specifications

Demio 1.3: Technical specifications

Workshop data for the 1.3-litre petrol (engine code B3). Covers engine, fluids, brakes, service, torques and air conditioning: the figures to check before a job or a parts order.

Common faults & fixes

Summary

Match the engine code (B3) to the vehicle before ordering parts or applying these figures.

Vehicle specifications

Overview

Make: Mazda
Model: Demio
Years: 1998–2003
Fuel: Petrol
Engine code: B3

Performance & efficiency

Power: 46 kW (63 hp)
Engine size: 1,324 cc
Cylinders: 4 · OHC
Compression ratio: 9.4:1
Fuel system: Mazda

Fluids & capacities

Engine oil (with the filter): 3.2 litres

All 124 specifications below

Engine & identification

Vehicle identification

No. of cylinders Type	4/OHC
Capacity (Fiscal) cc	1324
Compression ratio :1	9,4
Suitable for unleaded petrol	Yes
Minimum octane rating RON	95
Ignition system Make	Mazda
Ignition system Description	Map-i
Trigger location	Distributor
Fuel system Make	Mazda
Fuel system Type	EGI
Fuel system Description	MFI-s
Air metering Type	Mass
Combined ignition and fuel ECM	Yes
Diagnostic socket	Yes

Ignition system

Ignition coil supply voltage + with ballast V	12
Secondary resistance Ohm	20000-31000

Firing order

The firing order for the Mazda Demio 1.3 (1998–2003) is 1-3-4-2.

Firing order	1-3-4-2

Valve clearances

Valve clearances for the Mazda Demio 1.3 (1998–2003) are 0,30 mm inlet and 0,30 mm exhaust, measured hot.

Valve clearance - INLET mm	0,30 hot
Valve clearance - EXHAUST mm	0,30 hot

Engine oil & fluids

Engine oil

The Mazda Demio 1.3 (1998–2003) takes 3.2 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, with classification GL-4/5.

Coolant

The listed total cooling-system capacity is 6.0 litres.

Grades, filling conditions and capacities

Lubricants and capacities — complete reference
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➞30°C
Engine oil grade SAE	10W-30
Engine oil classification API/ACEA	SJ/A2
Ambient temperature range	-25°C➞
Engine oil grade SAE	10W-40, 10W-50
Engine oil classification API/ACEA	SJ/A2
Ambient temperature range	-10°C➞
Engine oil grade SAE	20W-40, 20W-50
Engine oil classification API/ACEA	SJ/A2
Engine with filter(s) litres	3.2
Other lubricants and capacities
Manual transmission oil grade SAE	75W-90
Manual transmission oil classification	GL-4/5
Manual transmission litres	2.7
Cooling system - total capacity litres	6.0
Brake fluid Type	DOT 3/4
Brake fluid litres	0.9
Power steering fluid Type	Dexron II
Power steering fluid litres	0.9

Brakes & wear limits

Brake disc thickness

Brake discs on the Mazda Demio 1.3 (1998–2003) are replaced at a minimum thickness of 20 mm (ventilated) front; the rear brake drums are replaced at a maximum diameter of 201,5 mm.

Minimum disc thickness for replacement - ventilated Front	20 mm
Maximum drum diameter for replacement Rear	201,5 mm

Brake disc and drum dimensions

Disc runout Front	0,05 mm
Minimum pad thickness Front	2 mm
Minimum shoe thickness Rear	1 mm
Parking brake travel No. of notches	6-8

Service & electrical

Tuning and emissions

Ignition timing and idle speed
Tuning conditions	—
View more information	—
Ignition timing - basic BTDC °Engine/rpm	10±1/750 2000-=7±1/750
Ignition advance checks °Engine/rpm	ECM Controlled
Idle speed rpm	750±50
Oil temperature °C	80
CO level at idle speed - tailpipe Vol. % CO	0,5 Max Not adjustable
HC level at idle speed ppm	100
CO2 level at idle speed Vol. % CO2	14,5-16
O2 level at idle speed Vol. % O2	0,1-0,5
Increased idle speed for CO test rpm	2500-2800
CO content at increased idle speed Vol. %	0,3
Lambda at increased idle λ	0,97-1,03

Starting and charging

Battery V/RC(Ah)	12
Alternator output A/V/rpm	68/13,5/2000

Service checks and adjustments

Compression pressure bar	9,9-14,1
Oil pressure bar/rpm	3,0-3,9/3000
Radiator cap bar	0,74-1,02
Thermostat opens °C	88
Drive belt tension - alternator/PAS/AC mm	6,0-7,5/9-10
Drive belt tension - AC mm	9-10

Fuel system

System pressure bar	2,6-3,1
Regulated pressure with vacuum bar	2,1-2,5
Engine coolant temperature (ECT) sensor Ohm/°C	290-400/80
Injector Ohm	12,0-16,0
Injector opening duration (hot) ms/rpm	2-4
Lambda sensor (Oxygen) heater Ohm	6,0

Spark plugs

Spark plugs Original equipment	Denso
Spark plug Type	K16PR-U11
Electrode gap mm	1,0-1,1
Spark plugs Make	Champion
Spark plug Type	RC10YC4
Electrode gap mm	1,0-1,1
Spark plugs Make	NGK
Spark plug Type	BKR5E-11
Electrode gap mm	1,0-1,1

Tightening torques

Cylinder head bolt torque

The cylinder head bolts on the Mazda Demio 1.3 (1998–2003) are tightened in 3 stages: 20-30 Nm, then 40-60 Nm, then a final 76-81 Nm.

Cylinder head
Renew bolts	No
Tighten	20-30 Nm
Tighten	40-60 Nm
Tighten	76-81 Nm

Other engine tightening torques
Cylinder head instructions	—
Main bearings Renew bolts/nuts	No
Main bearings Stage 1	27-29 Nm
Main bearings Stage 2	54-58 Nm
Big end bearings Renew bolts/nuts	No
Big end bearings Stage 1	15-17 Nm
Big end bearings Stage 2	30-34 Nm
Oil pump to cylinder block	19-25 Nm
Sump bolts	8-11 Nm
Sump drain bolt	30-41 Nm
Flywheel/driveplate	97-102 Nm
Clutch pressure plate	18-26 Nm
Crankshaft pulley/damper centre bolt	157-166 Nm
Crankshaft pulley/damper bolts	15±2 Nm
Camshaft sprocket/gear	50-60 Nm
Camshaft/rocker cover	5-9 Nm
Inlet manifold to cylinder head	19-25 Nm
Exhaust manifold to cylinder head	19-22 Nm
Exhaust downpipe to manifold	38-51 Nm
Water pump	19-25 Nm
Spark plugs	15-22 Nm
Fuel rail	19-25 Nm
Engine coolant temperature (ECT) sensor	16-23 Nm
Knock sensor (KS)	20-34 Nm
Engine oil pressure switch	12-17 Nm
Chassis tightening torques
Front hub	157-235 Nm
Front hub
Rear hub	—
Rear hub
Steering track rod end	38-51 Nm
Brake caliper/carrier to hub Front	40-49 Nm
ABS sensor Front	19-25 Nm
ABS sensor Rear	18-26 Nm
Road wheels	89-117 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	R134a
Air conditioning refrigerant quantity grams	650 RHD=600
Air conditioning oil group	PAG
Air conditioning oil Type	Atmos GU 10
Air conditioning oil quantity cm³	150
Air conditioning oil viscosity ISO	46

Frequently asked questions

What is the firing order of the Mazda Demio 1.3?

The firing order for the Mazda Demio 1.3 (1998–2003) is 1-3-4-2.

How much oil does the Mazda Demio 1.3 take?

The Mazda Demio 1.3 (1998–2003) takes 3.2 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 Demio 1.3?

Valve clearances for the Mazda Demio 1.3 (1998–2003) are 0,30 mm inlet and 0,30 mm exhaust, measured hot.

What is the cylinder head torque for the Mazda Demio 1.3?

The cylinder head bolts on the Mazda Demio 1.3 (1998–2003) are tightened in 3 stages: 20-30 Nm, then 40-60 Nm, then a final 76-81 Nm.

What is the minimum brake disc thickness for the Mazda Demio 1.3?

Brake discs on the Mazda Demio 1.3 (1998–2003) are replaced at a minimum thickness of 20 mm (ventilated) front; the rear brake drums are replaced at a maximum diameter of 201,5 mm.