What Causes Smoke from the Car Steering Wheel?

[VonKingston]

Reasons for smoke from the steering wheel include improper mixture ratio and excessive engine wear. Improper Mixture Ratio: This occurs when the mixture of fuel and oil is incorrect, or when the wrong grade of oil is used. If the mixture contains too much oil or the oil quality is poor, the combustible mixture cannot burn completely, resulting in black smoke. In two-stroke engines with separate lubrication systems, an improperly adjusted oil pump supplying excessive oil can also cause this phenomenon. In such cases, the oil pump should be inspected and adjusted as per specifications to ensure proportional oil supply at different throttle openings. Excessive Engine Wear: In four-stroke engines, excessive wear or breakage, as well as excessive oil in the crankcase, can lead to oil entering the combustion chamber, causing an overabundance of oil in the mixture. In two-stroke engines, a damaged crankshaft oil seal can allow transmission oil to enter the crankcase and subsequently the combustion chamber along with the mixture.