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?