Limited time, introductory offer! Buy two electronic books and get $10.00 off!

Buy the "Smog Refresher Course" and "Lab Scopes: Introductory and Advanced" e-books together for only $39.90 - a $10 savings! (Regular price $49.90)

1. The "Smog Refresher Course" contains 121 pages packed with theory, examples and questions.

Includes all these chapters (also sold individually as articles):

1. Exhaust Gas Theory
2. Exhaust Gas Examples
3. Exhaust Gas Test and Answers
4. Scan Tool Diagnosis Theory
5. Scan Tool Diagnosis Examples
6. Scan Tool Diagnosis Test & Answers
7. Emission Control Device Theory
8. Emission Control Device Examples
9. Emission Control Device Test & Answers
10. Feedback Carburetor Theory
11. Feedback Carburetor Examples
12. Feedback Carburetor Test & Answers
13. Rules and Regulations Theory
14. Rules and Regulations Test & Answers
15. Dynamometer Testing Theory
16. On Board Diagnostics II

For those of you taking the CA Smog Check Technicians License Exam, it contains 141 sample test questions and answers. These questions are similar to what is on the state test. I can't give you the actual questions - the BAR would skin be alive!

Also available in a printed version (direct from the printers) for only $39.00.

2. "Lab Scopes: Introductory & Advanced" is 75 information packed pages. Contains lots of screen captures and pictures to help illustrate procedures.

The book contains these chapters:

1. Lab Scopes - How do they work? - Compared to a Scan Tool; Compared to a Voltmeter; What a Lab Scope Shows; Analog or Digital; Analog Lab Scopes; Digital Lab Scopes; Downside of Digital; Advantages of Digital; Introduction to a Basic Model; Divisions or Graticules; Voltage; Time; Zero Point; Channels.
2. Basic Electricity, Circuits and Digital Signals - What is Electricity?; Definitions; Voltage; Amperage; Resistance; Watts; Types of Circuits; Series Circuit; Parallel Circuit; Digital Signals; Hertz or HZ; Duty Cycle; Pulse Width; Number Symbols; Milli or m; Kilo or K; Micro; Mega or M
3. Pattern Recognition - Magnetic Pickup RPM Sensor; Hall Effect RPM Sensor; Optical RPM Sensor; Throttle Position Sensor; Fuel Injector; Duty Cycle; Ignition Primary; Alternator Ripple.
4. Getting a Pattern on the Scope - What if nothing happens when you turn it on?; Where to connect the test leads?; The Black Test Lead; The Red Test Lead; Warning; To look at a Computer Input; About Shielded Wires and Electrical Noise; To look at a Computer Output; How to Connect to the Wire; How to Back Probe a Wire; To Puncture or not to Puncture the Wire; Why Do It?; How to Puncture the Wire; What to Adjust? Or Why Doesn't My Pattern Look Right?; Voltage Adjustment; Time Settings; Ground Positioning; 10:1 Probes; Sampling Rate; What to Do.
5. Trigger - Positive and Negative Slope; To Adjust the Trigger; Tricky Stuff About Trigger; What do you mean Trigger Mode?; Trigger Mode and Intermittent Signals; Uses for Trigger Mode.
6. Relative Compression - Counter Electro-motive Force; To Measure Starter Current; High Amp Probe (or Current Clamp); Set Up Your Scope; How Do You Know Which Cylinder is Low?; Relative Compression Test.
7. Fuel Pumps -Low Amp Probes; Where to Attach the Current Probe; About Fuel Pumps; Fuel Pump Commutator Segments; Fuel Pump Brushes; Good Fuel Pump Pattern; Bad Fuel Pump Pattern; After Replacing the Pump.
8. Primary Ignition - How to Generate Spark; Capacitive Discharge System; Primary Wiring; 10:1 Filter; When You Hook Up Your Scope; What The Scope Pattern Means; Dwell or Saturation; Spark Duration; Using Spark Duration for Diagnosis; High Resistance; Low Resistance; RPM Probes; RPM Trigger; Primary Ignition Pattern; High Resistance Problem.
9. Primary Ignition Amperage or Current Ramping - Counter Electromotive Force (CEMF); Primary Ignition Volts; Primary Amperage; Computer Controlled Dwell; Low Current Probe; What To Look For; Normal Good Current Ramp; Possible Problems to Diagnose.
10. Secondary Ignition - High Voltage; Basic Secondary Ignition Pattern; Firing KV; String Theory; Open Spark Plug Wire; High KV; High Resistance Problems; Low KV; Low Resistance Problems; String Theory Example; Low Resistance; 10,000:1 Probe; Secondary Ignition Readings; Secondary Hookup; Voltage Between Probe and Ground; Using an Adapter; Using Adapters to Pick Up Signals; Foil Tape; "Right Side Up" Patterns; Pattern Points Down; Ignition Sparks Go Down; DIS Systems; Parade Patterns; Normal Engine; Low Resistance Problem; Parade Pattern of 4 Cylinder Engine.

Also available in a printed version (direct from the printers) for only $39.00.

Get the special price on this introductory offer for both electronic books at only $39.90, saving $10.00 while increasing your job worth! And every order comes with a 100% money back guarantee! All e-books require the free Adobe Acrobat Reader to read them which most computers already have. If you don't have the free Reader, click here to get it. Please note that these are electronic books - files that live on the internet. They are cheaper than the printed versions of the books. You can access them as soon as your order is complete, save them to your computer, print them out or look at them another day online.