Title: Perform engine absolute manifold pressure tests (vacuum/boost); document results.
Course: Automotive Technology II (20104-II) > Section: Engine Performance: General

Performance should include

- using a vacuum gauge
- comparing the vacuum gauge reading to map tool data
- searching for a non-ported vacuum source
- performing an idle-vacuum test
- performing a cranking-vacuum test
- performing an exhaust-restriction test.

ASE Education Foundation
2017 Maintenance and Light Repair (MLR) Level
VIII. Engine Performance
A. General
Task 2

Process/Skill Questions:

- How does a vacuum gauge respond to a restricted exhaust system?
- What is normal idle vacuum?
- What is a ported vacuum?