Does a Faulty Exhaust Valve Cause Engine Oil Burning?

[SanGabriela]

A faulty exhaust valve can lead to engine oil burning issues, as well as problems like engine idling vibrations and stalling. The main causes of exhaust valve damage include: poor quality of the valve itself, improper maintenance, low-quality fuel, and prolonged use leading to aging. More details are as follows: 1. The exhaust valve, also known as the pressure control valve, is installed between the compressor outlet and the condenser inlet. It helps improve heat transfer efficiency inside the condenser and evaporator. 2. The exhaust valve effectively reduces the NOX content in exhaust emissions. By recirculating exhaust gases into the combustion chamber, it lowers the internal temperature of the cylinder, thereby inhibiting NOX formation and reducing NOX levels in the exhaust. 3. Engine oil burning may also be caused by: faulty valve stem seals, excessive carbon buildup inside the engine, low-quality fuel, a dirty throttle body, overfilled engine oil (exceeding the maximum mark), or a clogged oil filter. 4. Symptoms of engine oil burning include: blue smoke from the exhaust pipe, vehicle vibration during idling, and severe oil loss within regular maintenance intervals.