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Engine Mechanical Testing by John Thornton

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Two fast & effective diagnostic tests to find mechanical problems are cranking current and cranking vacuum.  Many technicians do not perform these because of old habits, lack of a step-by-step process, or not knowing what to do with the test results.

This class will guide you in finding mechanical problems using easy tests that can be performed in a short time span using tools most shops already have.

Topics Covered
The basics: disable fuel and set sync probe
• Cranking current & cranking vacuum testing
• The step-by-step process on setting up your scope to perform both tests
• How to interpret the test results and where to go from there
• Learn the value of piston position charts and engine relationship charts
• Why go to in-cylinder testing when you don’t have to?
• Tips on inexpensive tooling
• We will provide you with the know-how to perform these tests and how to interpret the results.

With a little practice you will see your testing speed, interpretation efficiency and confidence in finding mechanical problems dramatically increase.

Instructor John Thornton

Video Length 4 hours approx

PDF Class Manual included, to be downloaded after logging in to watch the video

Streaming Delivery
- On the day of each live broadcast an email will be sent to you from ZOOM an hour before the event begins.
- One week after the live broadcast, the recordings from both nights will be combined into one video and posted into your account at ASI. Login credentials will be emailed to you from AESwave.

About John Thornton
John discusses how to ground your scope during a seminarFor 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 communication issues, and electrical diagnosis, 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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