Mazda2002–2005Technical specifications

6 2.0: Technical specifications

Workshop data for the 2-litre petrol (engine code LF). 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 (LF) to the vehicle before ordering parts or applying these figures.

Vehicle specifications

Overview

Make: Mazda
Model: 6
Years: 2002–2005
Fuel: Petrol
Engine code: LF

Performance & efficiency

Power: 104 kW (141 hp)
Engine size: 1,999 cc
Cylinders: 4 · DOHC
Compression ratio: 10.8:1
Fuel system: Mazda

Fluids & capacities

Engine oil (with the filter): 4.3 litres

All 119 specifications below

Engine & identification

Vehicle identification

No. of cylinders Type	4/DOHC
Capacity (Fiscal) cc	1999
Compression ratio :1	10,8
Suitable for unleaded petrol	Yes
Minimum octane rating RON	91
Ignition system Make	Mazda
Ignition system Description	Map-DI
Trigger location	Cam/Crankshaft
Fuel system Make	Mazda
Fuel system Type	EGI
Fuel system Description	MFI-s
Air metering Type	Mass/MAP
Combined ignition and fuel ECM	Yes
Diagnostic socket	Yes

Ignition system

Ignition coil supply voltage + with ballast V	12,0
Primary resistance Ohm	0,49-0,57
Secondary resistance Ohm	9500-11100
Distributor (ECM) Make	(Mazda)

Firing order

The firing order for the Mazda 6 2.0 (2002–2005) is 1-3-4-2.

Firing order	1-3-4-2

Valve clearances

Valve clearances for the Mazda 6 2.0 (2002–2005) are 0,22-0,28 mm inlet and 0,27-0,33 mm exhaust, measured cold.

Valve clearance - INLET mm	0,22-0,28 cold
Valve clearance - EXHAUST mm	0,27-0,33 cold

Engine oil & fluids

Engine oil

The Mazda 6 2.0 (2002–2005) takes 4.3 litres of engine oil with the filter.

See the reference table for the complete engine oil entries and their conditions.

Manual gearbox

See the reference table for the complete manual gearbox entries and their conditions.

Coolant

See the reference table for the complete coolant entries and their conditions.

Grades, filling conditions and capacities

Lubricants and capacities — complete reference
Engine oil options
Ambient temperature range	➞40°C
Engine oil grade SAE	5W-20, 5W-30
Engine oil classification API/ACEA	SL/A3, A5
Ambient temperature range	-25°C➞45°C
Engine oil grade SAE	10W-40
Engine oil classification API/ACEA	SL/A3, A5
Engine with filter(s) litres	4.3
Other lubricants and capacities
Manual transmission oil grade SAE	—
Manual transmission oil grade
Manual transmission litres	2,9 6sp=3,0
Automatic transmission fluid Type	Dexron III
Automatic transmission (drain & refill) litres	8.3
Cooling system - total capacity litres	7.5
Brake fluid Type	DOT 3/4
Power steering fluid Type	Dexron II
Power steering fluid litres	0,8 AT=0,9

Brakes & wear limits

Brake disc thickness

Brake discs on the Mazda 6 2.0 (2002–2005) are replaced at a minimum thickness of 23 mm (ventilated) front and 8 mm rear.

Minimum disc thickness for replacement - ventilated Front	23 mm
Minimum disc thickness for replacement Rear	8 mm

Brake disc and drum dimensions

Disc runout Front	0,05 mm
Disc runout Rear	0,05 mm
Minimum pad thickness Front	2 mm
Minimum pad thickness Rear	2 mm
Parking brake travel No. of notches	3-6

Service & electrical

Battery

The Mazda 6 2.0 (2002–2005) uses a 12 V, 75 Ah battery.

Battery V/RC(Ah)	12 (75)

Tuning and emissions

Ignition timing - basic BTDC °Engine/rpm	10/650±50 Not adjustable
Ignition timing - alternative °Engine/rpm	AT=10/700±50 Not adjustable
Ignition advance checks °Engine/rpm	ECM Controlled
Idle speed rpm	650±50 Not adjustable
Idle speed - alternative rpm	AT=700±50 Not adjustable
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

Alternator output A/V/rpm	90/12/2000

Service checks and adjustments

Compression pressure bar	12,0-17,2
Oil pressure bar/rpm	2,3-5,2/3000
Radiator cap bar	1,10-1,40
Thermostat opens °C	97

Fuel system

Fuel pump delivery pressure bar	3,75-4,5
Engine coolant temperature (ECT) sensor Ohm/°C	5070-5600/70
Crankshaft position (CKP) sensor/engine speed (RPM) sensor Ohm	400-500
Injector Ohm	11,4-12,6
Lambda sensor (Oxygen) heater Ohm	—

Spark plugs

Spark plugs Original equipment	NGK
Spark plug Type	ITR6F-13
Spark plugs Make	NGK
Spark plug Type	ITR6F-13

Tightening torques

Cylinder head bolt torque

The cylinder head bolt torque for the Mazda 6 2.0 (2002–2005) is 5 Nm.

Cylinder head
Maximum bolt length	146,5 mm
Tighten	5 Nm
Tighten	15±1 Nm
Tighten	45±1 Nm
Tighten	90°±2°
Tighten	90°±2°

Other engine tightening torques
Cylinder head instructions	—
Main bearings Stage 1	—
View more information	—
Main bearings
Big end bearings Renew bolts/nuts	Yes
Big end bearings Stage 1	29±3 Nm
Big end bearings
Big end bearings Stage 2	90°±10°
Sump bolts	—
Sump bolts
Sump drain bolt	22-30 Nm
Flywheel/driveplate	108-115 Nm
Clutch pressure plate	18-26 Nm
Crankshaft pulley/damper centre bolt	100±4 Nm+90°
Bolts/nuts
Camshaft sprocket/gear	89-95 Nm
Camshaft carrier/cap	15±1 Nm
Camshaft/rocker cover	9±1 Nm
Inlet manifold to cylinder head	10±1 Nm
Exhaust manifold to cylinder head	54±10 Nm
Exhaust downpipe to manifold	45±7 Nm
Water pump	10±2 Nm
Spark plugs	12±2 Nm
Fuel rail	25±5 Nm
Crankshaft position (CKP) sensor/engine speed (RPM) sensor	7±1 Nm
Engine coolant temperature (ECT) sensor	12±2 Nm
Lambda sensor (Oxygen)	39±10 Nm
Knock sensor (KS)	20±4 Nm
Engine oil pressure switch	15±3 Nm
Oil filter	30-35 Nm
Chassis tightening torques
Front hub	255±20 Nm
Bolts/nuts
Rear hub	176-235 Nm
Steering wheel	39-49 Nm
Steering rack/box mounting	74-104 Nm
Steering track rod end	37±3 Nm
Brake disc to hub Front	12±3 Nm
Brake caliper to carrier Front	52±2 Nm
Brake caliper/carrier to hub Front	90±12 Nm
Brake disc to hub Rear	12±3 Nm
Brake caliper to carrier Rear	43±6 Nm
ABS sensor Front	22±3 Nm
ABS sensor Rear	22±3 Nm
Road wheels	103±15 Nm

Air conditioning

Refrigerant quantity
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	—
Air conditioning oil group	PAG
Air conditioning oil Type	Atmos GU 10
Air conditioning oil quantity cm³	120
Air conditioning oil viscosity ISO	46

Frequently asked questions

What is the firing order of the Mazda 6 2.0?

The firing order for the Mazda 6 2.0 (2002–2005) is 1-3-4-2.

How much oil does the Mazda 6 2.0 take?

The Mazda 6 2.0 (2002–2005) takes 4.3 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 6 2.0?

Valve clearances for the Mazda 6 2.0 (2002–2005) are 0,22-0,28 mm inlet and 0,27-0,33 mm exhaust, measured cold.

What is the cylinder head torque for the Mazda 6 2.0?

The cylinder head bolt torque for the Mazda 6 2.0 (2002–2005) is 5 Nm.

What is the minimum brake disc thickness for the Mazda 6 2.0?

Brake discs on the Mazda 6 2.0 (2002–2005) are replaced at a minimum thickness of 23 mm (ventilated) front and 8 mm rear.

What battery does the Mazda 6 2.0 use?

The Mazda 6 2.0 (2002–2005) uses a 12 V, 75 Ah battery.