Title: Diagnose the cause of excessive oil consumption; coolant consumption; unusual exhaust color, odor, and sound and determine needed action.
Course: Automotive Technology III (20104-III) > Section: ENGINE PERFORMANCE: General

Diagnosis should include

- smelling the exhaust
- observing the exhaust color
- listening for uneven exhaust pulses (misfiring) and restriction noises (hissing)
- examining areas where oil may be leaking or burning (by using dyes)
- changing the oil and observing oil consumption
- conducting a pressure check to determine coolant consumption
- repairing as needed.

Process/Skill Questions:

- What does blue smoke indicate?
- What does black smoke indicate?
- What does white smoke indicate?
- What causes a rotten egg smell?