Freeze Plug Service 758
Coolant Service 759
Flushing a Cooling System 761
Temperature Gauge Service 762
Duff’s Garage 763
Cooling System Diagnosis 766
Chapter 41 768
Lubrication System Fundamentals
Lubrication System Functions 768
Lubrication System Operation 768
Positive Crankcase Ventilation System 780
Oil Pressure Indicator 781
Industry Trend 783
Chapter 42 786
Lubrication System Testing, Service, and
Repair
Lubrication System Problem Diagnosis 786
Engine Oil and Filter Service 790
Oil Pan Service 791
Oil Pump Service 793
Pressure Relief Valve
Service 797
Oil Pressure Indicator and Gauge
Service 798
PCV Valve Service 799
Duff’s Garage 799
Lubrication System
Diagnosis 801
Section 7
Emission Control Systems
Chapter 43 803
Emission Control Systems
Air Pollution 803
Motor Vehicle Emissions 803
Engine Modifications Related to Emission
Control 805
Vehicle Emission Control Systems 806
Positive Crankcase Ventilation (PCV) 806
Evaporative Emissions Control Systems 808
Exhaust Gas Recirculation (EGR) 811
Air Injection System 815
Pulse Air System 817
Thermostatic Air Cleaner System 818
Catalytic Converter 818
Computerized Emission Control Systems 821
OBD II Emission System Monitoring 826
Highway History 828
Chapter 44 831
Emission Control System Testing, Service,
and Repair
Computer-Controlled Emission System Service 831
Emission Maintenance Reminder 832
Inspecting Emission Control Systems 832
Exhaust Gas Analyzer 833
State Emissions Testing Programs 837
Vacuum Solenoid Service 840
PCV System Service 842
Evaporative Emissions Control System Service 843
Thermostatic Air Cleaner System Service 844
EGR System Service 845
Air Injection System Service 846
Pulse Air System Service 847
Catalytic Converter Service 847
Oxygen Sensor Service 849
Emission Control Information
Sticker 852
OBD II Drive Cycle 852
Duff’s Garage 853
Emission Control System
Diagnosis 856
Section 8
Engine Performance
Chapter 45 859
Engine Performance and Driveability
Locating Engine Performance Problems 859
Typical Performance Problems 863
Other Performance Problems 866
Workplace Skills 866
Engine Performance Diagnosis 870
Chapter 46 871
Advanced Diagnostics
Advanced Diagnostics 871
Duff’s Garage 896
Chapter 47 901
Engine Tune-Up
Engine Tune-Up 901
General Tune-Up Rules 903
Tune-Up Safety Rules 903
Typical Tune-Up
Procedures 904
Diesel Engine Tune-Up (Maintenance) 908
Engine Tune-Up (Maintenance) Intervals 909
Duff’s Garage 909
Expanded Contents xiii