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Leading through Technology www.audiusa.com Service Training Audi 4.2 liter V8 FSI Engine Self Study Program 921603 . Technical specifications subject to change without notice. Audi of America, Inc. 3800 Hamlin Road Auburn Hills, Michigan 48326 Audi of America, Inc. Service Training Printed in U.S.A. Printed 07/2006 Course Number 921603 2006 Audi of America, Inc. . All information contained in this manual is based on the latest information available at the time of printing and is subject to the and other intellectual property rights of Audi of America, Inc., its afifliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, nor may these materials be modiifed or reposted to other sites without the prior expressed written permission of the publisher. All requests for permission to copy and redistribute information should be referred to Audi of America, Inc. Always check Technical Bulletins and the latest electronic repair information for information that may supersede any information included in this booklet. Trademarks All brand names and product names used in this manual are trade names, service marks, trademarks, or registered trademarks; and are the property of their respective owners. Table of Contents Introduction 1 Engine Mechanical 5 Oil Circulation System . . 14 Cooling System . . 18 Air Circulation System . . 20 Fuel System . . 26 Exhaust System . . 28 Engine Management . 32 Knowledge Assessment 43 The Self Study Program provides introductory information regarding the design Reference Note and function of new models, automotive components or technologies. The Self Study Program is not a Repair Manual All values given are i