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Mazda SKYACTIV-G 2.5 User Manual

Mazda SKYACTIV-G 2.5
101 pages
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Title Section
GENERAL INFORMATION 00
ENGINE
01
CONTENTS
Engine
Workshop
Manual
SKYACTIV-G 2.5
FOREWORD
This manual explains the service points for
the above-indicated automotive system.
This manual covers all models with the
above-indicated automotive system, not any
one specific model.
In order to do these procedures safely,
quickly, and correctly, you must first read
this manual and any other relevant service
materials carefully.
All the contents of this manual, including
drawings and specifications, are the latest
available at the time of printing.
As modifications affecting repair or
maintenance occur, relevant information
supplementary to this volume will be made
available at Mazda dealers. This manual
should be kept up-to-date.
Mazda Motor Corporation reserves the right
to alter the specifications and contents of
this manual without obligation or advance
notice.
All rights reserved. No part of this book may
be reproduced or used in any form or by any
means, electronic or mechanical—including
photocopying and recording and the use of
any kind of information storage and retrieval
system—without permission in writing.
Mazda Motor Corporation
HIROSHIMA, JAPAN
© 2012 Mazda Motor Corporation
PRINTED IN U.S.A., DECEMBER 2012
Form No. 1A36–1U–12L
Part No. 9999–95–EWPY–14
1A36-1U-12L(INDEX).fm 1 ペー   

Table of Contents

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Mazda SKYACTIV-G 2.5 Specifications

General IconGeneral
Fuel SystemDirect injection
Compression Ratio13.0:1
AspirationNaturally aspirated
Fuel TypeGasoline
Engine TypeInline 4 Cylinder
Displacement2.5L (2488 cc)
Max Torque186 lb-ft
ValvetrainDOHC

Summary

General Information and Usage Guide

How to Use This Manual

Guidance on navigating the manual and understanding its structure and procedures.

Mechanical Systems

Electric Variable Valve Timing Motor/Driver Inspection

Inspects the operation and smoothness of the electric variable valve timing motor.

Hydraulic Variable Valve Timing Actuator Inspection

Verifies alignment of rotor and cover on the hydraulic variable valve timing actuator.

Electric Variable Valve Timing Actuator Inspection

Checks smooth rotation of the eccentric shaft in the electric variable valve timing actuator.

Oil Control Valve (OCV) Inspection

Tests OCV coil resistance and verifies spool valve operation for timing control.

Hydraulic Lash Adjuster (HLA) Inspection

Visually inspects the HLA surface for wear or damage.

Rocker Arm Inspection

Checks rocker arm roller rotation and inspects contact surfaces for wear.

Engine Mounting/Dismounting

Procedure for mounting and dismounting the engine using special service tools.

Cylinder Head Inspection

Inspects cylinder head surface for cracks and distortion using dye penetrant.

Valve Seat Inspection/Repair

Measures valve seat width and verifies centering, with repair instructions.

Valve, Valve Guide Inspection

Measures valve dimensions, stem diameter, and valve guide inner diameter.

Camshaft Inspection

Measures camshaft runout, cam height, journal diameter, and oil clearance.

Technical Data Specifications

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