Practice question

Persistent blue smoke from the exhaust usually indicates that the engine is:

  1. Running too lean on fuel
  2. Burning engine oil, for example past worn rings or valve guides
  3. Overcharging the battery
  4. Low on brake fluid

Answer: B — Burning engine oil, for example past worn rings or valve guides

The correct answer is shown above. Try the full quiz for additional practice.

Practice more: VETA Motor Vehicle Mechanics Trade Test Practice Questions - Tanzania VETA Trade Test - Motor Vehicle Mechanics Exam →