Can Replacing the Exhaust Valve on a C4L Solve the Oil Burning Issue?

[VictoriaLee]

Replacing the exhaust valve on a C4L can resolve the oil burning issue caused by a faulty exhaust valve. Below are the specific reasons for oil burning: 1. Worn valve oil seals: Valves are designed to prevent oil from leaking into the combustion chamber, but over time, they can wear out or age. Severe wear can affect the valve's sealing ability, leading to oil burning. 2. Excessive piston clearance: With prolonged use of the car, incomplete combustion can cause carbon deposits to accumulate on the piston rings. If not cleaned regularly, this can enlarge the gap between the piston rings and the cylinder wall, allowing oil to enter the combustion chamber and cause oil burning. In severe cases, it may even lead to engine knocking. 3. Driving habits: Frequent rapid acceleration and prolonged high-speed driving can damage the lubricating oil film, resulting in poor engine lubrication and wear on certain components, which may also lead to oil burning. 4. Excessive oil level: If the oil level is too high and exceeds the maximum mark, the excess oil can easily enter the combustion chamber (due to excessive internal pressure) and form gummy carbon deposits.