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Gas Direct Injection by John Thornton

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John Thornton presents his diagnostic approach for GDI problems on both Asian and Domestic vehicles with an emphasis on how the PCM controls pumps & injectors, and how to diagnose them with both scan data & scope captures. The accompanying PDF class manual includes GDI specifications along with both good and bad test results to help you identify/solve GDI problems.

Part I
- GDI overview
- Testing high-pressure fuel pumps
- How to diagnose them both mechanically and electrically
- High pressure control strategies, including how the PCM controls and how to diagnose via scan data
- Multiple case studies highlighting John’s diagnostic approach for fuel pumps
- Case Studies: 2012 Hyundai Sonata, 2009 Buick Enclave, 2014 Ford Fusion

Part II
- High Pressure Fuel Injector Operation
- Diagnosing Fuel Injectors
- How to electronically test injectors that are switched on both the feed and ground side.
- Case Studies: 2013 Ford Escape Lean Misfire (lean misfire), 2013 Chevy Caprice Misfire (misfire), 2013 Ford Fusion Ecoboost No Start (no start)

Instructor John Thornton

Video Length 4 hours (Part 1 and 2)

PDF Class Manual included (to be downloaded after logging in to watch the video.)

Streaming Delivery
This product is only available as an on-demand streaming video with 24/7/365 access to the video and PDF manual through your "Automotive Seminars, Inc." account. No contents will be shipped. Please allow 24-48 hours for order processing. Login credentials will be emailed to you from "Automotive Seminars, Inc."


About John Thornton
John discusses how to ground your scope during a seminar

For the past 20 years, John has provided the automotive aftermarket with hands-on and classroom training on a wide variety of topics, including: engine and transmission driveability, module programming, bus communications, electrical diagnosis, and use of lab scopes and scan tools. In the process he has become the foremost trainer in the nation for professional technicians, school instructors, and technical trainers.

The information and techniques John presents have been gleaned over 30 years in the Chicago area as a diagnostic technician, working in the bay and now as mobile tech. He is a mechanical engineer and has an extensive electronics background.

"If you go to just one class, ya'gotta go to John's class, no matter what the topic is."  Bob in IL.

"John is the trainer that other trainers are measured by." Harvey in BC.


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