How to Determine if the PCV Valve is Burning Oil?

1 Answers
VonAdrian
07/28/25 5:34pm
Methods to determine if a car is burning oil include: 1. The oil dipstick level is significantly below the minimum mark; 2. Blue smoke emission: Visible carbon particles in the exhaust pipe that feel sticky to touch, with blue smoke from the tailpipe; Opening the oil filler cap or checking the dipstick reveals significant exhaust gas or even blue smoke; 3. Carbon buildup: Spark plugs show obvious carbon deposits and oil traces upon removal; Endoscope inspection reveals significant carbon buildup in valve guides and combustion chambers; The catalytic converter has noticeable carbon deposits. Causes of oil burning in cars: 1. Faulty design in the crankcase forced ventilation system; 2. Cross-hatching wear on cylinder walls. Hazards of oil burning: Generates excessive carbon deposits and sludge, leading to increased fuel consumption, reduced engine power, potential difficulty in starting the engine, and severe engine wear.
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