Correct answer
Engine oil is being burned.
It usually indicates oil burning in the engine. Possible causes include worn piston rings or valve-sealing components, but colour alone cannot identify the fault with certainty. Check consumption and follow manufacturer and workshop guidance. Oil consumption is not fuel consumption. Do not confuse it with temporary white condensation vapour or interpret every white plume as burning oil.
Practice more C licence questions
A self-check with exam-style questions on Mechanics and maintenance. Free, no signup.
All options
Engine oil is being burned.
Any white smoke proves that the air filter is dirty.
The colour identifies the exact faulty injector with certainty.
Editorial status: editorially approved. This status does not certify legal review. Report a correction
Share this question
Keep studying
Related questions
- If the lorry I am driving has a hydraulically operated braking circuit, I must...
- When the shock absorber deteriorates and loses effectiveness over time, how does this affect the suspension?
- What does the word “TUBELESS” written on the side of the tyre indicate?
- If an exhaust silencer is broken and no longer properly attenuates engine noise, what effect does this have?
- What properties should a gearbox gear lubricant have?
- In a conventional four-cylinder, four-stroke engine, how far does the crankshaft rotate during one complete piston stroke from one dead centre to the other?