Mazda1991–1994Technical specifications

MX-3 1.6: Technical specifications

Workshop data for the 1.6-litre petrol (engine code B6). 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 (B6) to the vehicle before ordering parts or applying these figures.

Vehicle specifications

Overview

Make
Mazda
Model
MX-3
Years
1991–1994
Fuel
Petrol
Engine code
B6

Performance & efficiency

Power
65 kW (88 hp)
Engine size
1,598 cc
Cylinders
4 · OHC
Compression ratio
9.0:1
Fuel system
Mazda

Fluids & capacities

Engine oil (with the filter)
3.3 litres
All 129 specifications below

Engine & identification

Vehicle identification

No. of cylinders Type4/OHC
Capacity (Fiscal) cc1598 (1585)
Compression ratio :19,0
Suitable for unleaded petrolYes
Minimum octane rating RON91
Ignition system TypeESA
Ignition system DescriptionMap-i
Trigger locationDistributor
Fuel system MakeMazda
Fuel system TypeEGI
Fuel system DescriptionMFI-i
Air metering TypeFlow
Combined ignition and fuel ECMYes
Diagnostic socketYes

Ignition system

Ignition coil MakeDenso
Ignition coil supply voltage + with ballast V11,0
Primary resistance Ohm0,81-0,99
Secondary resistance Ohm10000-16000
Distributor (ECM) MakeDenso

Firing order

The firing order for the Mazda MX-3 1.6 (1991–1994) is 1-3-4-2.

Firing order1-3-4-2

Valve clearances

Valve clearances on the Mazda MX-3 1.6 (1991–1994) are hydraulic — they self-adjust, so no manual clearance figure applies.

Valve clearance - INLET mmHydraulic
Valve clearance - EXHAUST mmHydraulic

Engine oil & fluids

Engine oil

The Mazda MX-3 1.6 (1991–1994) takes 3.3 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.

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➞
Engine oil grade SAE 10W-30
Engine oil classification API/ACEA SJ/A2
Engine with filter(s) litres 3.3
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 6.3
Cooling system - total capacity litres 6.0
Brake fluid Type DOT 3
Power steering fluid Type Dexron II
Power steering fluid litres 0.8

Brakes & wear limits

Brake disc thickness

Brake discs on the Mazda MX-3 1.6 (1991–1994) are replaced at a minimum thickness of 20 mm (ventilated) front and 7 mm rear.

Minimum disc thickness for replacement - ventilated Front20 mm
Minimum disc thickness for replacement Rear7 mm
Maximum drum diameter for replacement Rear201 mm

Brake disc and drum dimensions

Disc runout Front0,10 mm
Disc runout Rear0,10 mm
Minimum pad thickness Front2 mm
Minimum pad thickness Rear2 mm
Parking brake travel No. of notches5-7

Service & electrical

Ignition timing

Basic ignition timing for the Mazda MX-3 1.6 (1991–1994) is 10°±1° BTDC at 750 rpm.

Ignition timing and idle speed
Ignition timing - basic BTDC °Engine/rpm10±1/750

Battery

The Mazda MX-3 1.6 (1991–1994) uses a 12 V, 60 Ah battery (reserve capacity 110 minutes).

Battery V/RC(Ah)12/110 (60)

Spark plugs

The Mazda MX-3 1.6 (1991–1994) uses NGK BKR5E-11 spark plugs with a 1,1 mm electrode gap.

Spark plugs Original equipmentNGK
Spark plug TypeBKR5E-11
Electrode gap mm1,1
Spark plugs MakeAutolite
Spark plug TypeAPP3924
Electrode gap mm1,0
Spark plugs MakeBeru
Spark plug Type14FR-7DUX
Electrode gap mm1,1
Spark plugs MakeBosch
Spark plug TypeFR7DCX
Electrode gap mm1,1
Spark plugs MakeChampion
Spark plug TypeRC10YC4
Electrode gap mm1,1
Spark plugs MakeNGK
Spark plug TypeBKR5E-11
Electrode gap mm1,1

Tuning and emissions

Tuning conditions—
View more information—
Ignition timing and idle speed
Ignition advance checks °Engine/rpmECM Controlled
Idle speed rpm750±50
Oil temperature °C60
CO level at idle speed - tailpipe Vol. % CO0,5 Max Not adjustable
HC level at idle speed ppm100
CO2 level at idle speed Vol. % CO214,5-16
O2 level at idle speed Vol. % O20,1-0,5
Increased idle speed for CO test rpm2500-2800
CO content at increased idle speed Vol. %0,3
Lambda at increased idle λ0,97-1,03

Starting and charging

Starter motor MakeMitsubishi
Starter motor Type0,95kW
Maximum cranking amps A162-198
Alternator MakeMitsubishi
Alternator Type70A
Alternator output A/V/rpm70/14/3000
Regulated voltage V14,1-14,7

Service checks and adjustments

Compression pressure bar9,8-12,8
Oil pressure bar/rpm2,9-3,9/3000
Radiator cap bar0,74-1,03
Thermostat opens °C87-89
Drive belt tension - alternator/PAS/AC mm9-10

Fuel system

Fuel pump delivery pressure bar4,5-6,5
System pressure bar2,7-3,1
Regulated pressure with vacuum bar2,6-3,2
Engine coolant temperature (ECT) sensor Ohm/°C290-350/80
Injector Ohm12,0-16,0
Idle air control (IAC) valve/idle speed control (ISC) actuator Ohm11,0-13,0

Tightening torques

Cylinder head bolt torque

The cylinder head bolts on the Mazda MX-3 1.6 (1991–1994) are tightened in 3 stages: 36-41 Nm, then 56-61 Nm, then a final 76-81 Nm.

Cylinder head
Renew boltsNo
Tighten36-41 Nm
Tighten56-61 Nm
Tighten76-81 Nm
Cylinder head instructions—
Other engine tightening torques
Main bearings Renew bolts/nutsNo
Main bearings Stage 127 Nm
Main bearings Stage 254-58 Nm
Big end bearings Renew bolts/nutsNo
Big end bearings Stage 124 Nm
Big end bearings Stage 248-50 Nm
Oil pump to cylinder block20-25 Nm
Sump bolts—
Sump bolts
Sump drain bolt30-40 Nm
Flywheel/driveplate100 Nm/100 Nm
Clutch pressure plate18-26 Nm
Crankshaft pulley/damper centre bolt157-167 Nm
Camshaft sprocket/gear50-60 Nm
Camshaft carrier/cap11-14 Nm
Camshaft/rocker cover5-9 Nm
Inlet manifold to cylinder head20-25 Nm
Exhaust manifold to cylinder head15-25 Nm
Spark plugs15-23 Nm
Lambda sensor (Oxygen)30-49 Nm
Chassis tightening torques
Front hub235-319 Nm
Rear hub177-235 Nm
Steering track rod end42-57 Nm
Brake caliper/carrier to hub Front54 Nm
Brake caliper to carrier Rear53 Nm
Brake caliper/carrier to hub Rear52 Nm
Back plate to hub Rear45-60 Nm
ABS sensor Front20 Nm
ABS sensor Rear20 Nm
Road wheels88-118 Nm

Air conditioning

Air conditioning refrigerant TypeR134a
Air conditioning refrigerant quantity grams800
Air conditioning oil TypeAtmos S 150
Air conditioning oil quantity cm³150

Frequently asked questions

What is the firing order of the Mazda MX-3 1.6?

The firing order for the Mazda MX-3 1.6 (1991–1994) is 1-3-4-2.

What spark plugs does the Mazda MX-3 1.6 use?

The Mazda MX-3 1.6 (1991–1994) uses NGK BKR5E-11 spark plugs with a 1,1 mm electrode gap.

How much oil does the Mazda MX-3 1.6 take?

The Mazda MX-3 1.6 (1991–1994) takes 3.3 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 MX-3 1.6?

Valve clearances on the Mazda MX-3 1.6 (1991–1994) are hydraulic — they self-adjust, so no manual clearance figure applies.

What is the cylinder head torque for the Mazda MX-3 1.6?

The cylinder head bolts on the Mazda MX-3 1.6 (1991–1994) are tightened in 3 stages: 36-41 Nm, then 56-61 Nm, then a final 76-81 Nm.

What is the ignition timing for the Mazda MX-3 1.6?

Basic ignition timing for the Mazda MX-3 1.6 (1991–1994) is 10°±1° BTDC at 750 rpm.

More on the MX-3