Title: Diagnose engine mechanical, electrical, electronic, fuel, and ignition concerns; determine the needed action.
Course: Automotive Technology III (20104-III) > Section: ENGINE PERFORMANCE: General-Engine Diagnosis

Diagnosis should include performing

- engine-based tests (mechanical) prior to other testing
- an engine compression test
- a cylinder leak test
- a vacuum test
- a power balance test
- an ignition system test (using an oscilloscope)
- diagnostics with a scan tool
- fuel pressure and volume tests.

Process/Skill Questions:

- How can mechanical engine concerns affect drivability?
- What are effects of improper camshaft timing?
- What are causes of an engine miss?