What are the reasons for the VV7 burning engine oil?
2 Answers
The specific reasons for the VV7 engine burning oil are valve oil seals, excessive piston clearance, driving habits, and engine oil level. The detailed explanations are as follows: Valve Oil Seals: The valve is used to prevent oil from leaking into the combustion chamber, but over time, it can wear out or age. Severe cases can affect the sealing of the valve, making it prone to oil burning. Excessive Piston Clearance: When a car is used for a long time, unburned carbon deposits can accumulate on the piston rings. If not cleaned for a long time, it may cause the gap between the piston rings and the cylinder to expand, allowing oil to flow into the combustion chamber, resulting in oil burning. In severe cases, it can even lead to engine seizure. Driving Habits: Frequent sudden acceleration and prolonged high-speed driving can easily damage the lubricating oil film, leading to poor engine lubrication and wear on certain parts, which may also result in oil burning. Engine Oil Level: If the engine 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 produce gummy carbon deposits.
After using my VV7 for a while, it started burning oil. At first, I didn't pay much attention, but soon I noticed the oil consumption was too fast. I discussed it with my friends and found that the most common cause is a problem with the piston rings. These rings are responsible for sealing the oil in the cylinders. If they are worn or stuck, oil can leak into the combustion chamber and burn. Another reason could be aging or cracked valve stem seals. Over time, they may harden and fail to seal properly, allowing oil to seep in. Additionally, excessive carbon buildup inside the engine can cause the piston rings to stick, leading to oil burning. If the crankcase ventilation system is clogged or malfunctioning, pressure imbalances can cause oil to be sucked into the engine. My suggestion is to start with the basics: first, check the oil consumption, such as how much is lost per thousand kilometers, and see if there's any blue smoke coming from the exhaust pipe. These can help detect issues early. If a problem is found, don't delay—send it to a professional repair shop immediately to prevent further engine damage. Regular maintenance is crucial; using the right oil and sticking to the recommended replacement intervals can effectively prevent such issues.
