How to Determine if a Car's Oil-Gas Separator is Faulty?
2 Answers
When a car's engine experiences shaking after cold starts, burning engine oil, or a rich mixture triggering the engine fault light, it can be determined that the car's oil-gas separator is faulty. Below are the main functions of the oil-gas separator: 1. The primary role of the oil-gas separator is to filter gases from the engine oil, maintaining its fluidity and lubrication effectiveness in optimal condition. The oil-gas separator effectively preserves the lubrication state of friction components in the engine, reducing wear and corrosion caused by insufficient lubrication. 2. Additionally, the oil-gas separator helps maintain the pressure in the crankcase equal to atmospheric pressure, minimizing oil leakage due to pressure differences. If a fault occurs, it should be addressed promptly.
I've been driving for half my life, and the main way to tell if a car's oil separator is failing is to watch for a few key signs. A noticeable increase in oil consumption, like having to top up every few hundred kilometers, is not normal. Blue smoke from the exhaust is a classic symptom because oil is getting into the combustion chamber; the engine shakes noticeably at idle and runs unevenly, feeling like it's about to stall. Also, the air filter might be coated with oil—just take it off and you'll see. If you suspect an issue, try checking the PCV valve's tube by pinching it to see if it's clogged or greasy. I always have the mechanic take a look at this thing during maintenance because once it fails, engine carbon buildup accelerates, fuel consumption spikes, and in severe cases, it can damage the engine's piston rings. Catching it early can save you from costly repairs.
