Title: Observe engine exhaust.
Course: Diesel Equipment Technology I (20107-I) > Section: Diesel Engines: General

Observation should include

- conducting a visual inspection of the smoke
- recording the colors of smoke being emitted
- running the engine under various RPM and load to verify change in smoke color and volume
- determining the needed action.

ASE 4: Diesel Engines: A. General (P-1)

Process/Skill Questions:

- What do the different shades of smoke signify?
- What is the difference between white smoke and steam?
- What performance issues may be indicated by the presence of smoke?
- What after-treatment failures can cause smoke?
- How did equipment change in terms of emissions after 2007?