Will a faulty exhaust valve cause oil burning?

[LeWillow]

Damage to the exhaust valve can lead to oil burning and may also cause engine idle shaking or stalling. Here are the reasons for exhaust valve failure: 1. Poor quality of the exhaust valve itself; 2. Improper maintenance, low-quality fuel, or prolonged use leading to aging of the exhaust valve. Additional information: The exhaust valve, also known as the pressure control valve, is installed between the compressor outlet and the condenser inlet to improve heat transfer efficiency within the condenser and evaporator. The exhaust valve recirculates exhaust gases back into the cylinder for combustion, effectively lowering the internal temperature of the cylinder, which helps suppress the formation of NOX and reduces NOX emissions in the exhaust.

[ArianaRose]

A faulty PCV (Positive Crankcase Ventilation) valve can indeed indirectly cause oil burning issues. I remember this happening with my old car. The PCV valve is designed to regulate exhaust gas recirculation into the engine to help reduce emissions. If it gets stuck or leaks, the engine will ingest more exhaust gases, leading to incomplete combustion and unstable temperatures. This problem accelerates piston ring wear or increases carbon buildup, causing engine oil to be drawn into the combustion chamber and burned faster. You'll notice blue smoke from the exhaust and rapidly dropping oil levels on the dipstick, along with reduced power. When I delayed repairs for a few days, my car's fuel consumption skyrocketed and nearly caused engine damage. Don't wait for strange noises or warning lights - have a professional mechanic replace the valve immediately. It's an inexpensive fix that can prevent costly overhauls. Regular inspection of the exhaust system helps prevent such chain reactions and ensures worry-free driving.

[StAustin]

As an average car owner, I'm particularly concerned about expensive and troublesome repairs. A faulty exhaust gas recirculation (EGR) valve doesn't directly cause oil burning, but it can create complications. When it malfunctions, the engine ingests too much exhaust gas, leading to unstable operating conditions that may cause premature failure of other components like valve stem seals or piston rings, indirectly increasing oil consumption. The symptoms are quite noticeable: engine shaking at startup, lack of power during acceleration, and blue smoke from the exhaust pipe. The repair cost isn't too bad - replacing the valve costs around 100-200 RMB. But if ignored, the oil burning issue will worsen, and oil shortage may lead to engine cylinder scoring, with part replacements running into thousands. My neighbor's car was ruined this way - too late for regrets. Regularly check your dashboard for warning lights, and address any issues promptly at a reputable repair shop - don't wait to save small money at the risk of bigger problems. During routine maintenance, have the mechanic inspect the exhaust system to prevent potential issues.

[DiAddyson]

From a technical perspective, the exhaust gas recirculation (EGR) valve controls engine exhaust recirculation to reduce emissions. If it malfunctions—such as valve sticking or seal failure—the engine's air intake flow becomes abnormal, causing significant combustion temperature fluctuations. This may indirectly accelerate carbon buildup in the combustion chamber or wear piston rings, allowing engine oil to more easily enter the combustion chamber and burn off, leading to excessive oil consumption. The issue isn't absolute, but symptoms include unstable idling and blue exhaust smoke. The repair typically involves inspecting the valve's condition and replacing it to restore normal operation. Early intervention prevents chain reactions that could damage the engine.