Reasons for BYD F3 Burning Engine Oil?
3 Answers
BYD F3 burning engine oil may be due to the use of low-quality fuel, poor driving habits, poor road conditions, severe cylinder wear, piston ring wear, valve and guide wear, oil seal damage, clogged oil filter, etc. Related introduction: 1. Burning engine oil: It refers to engine oil entering the combustion chamber through certain channels and participating in combustion along with the air-fuel mixture. This is mainly caused by piston ring damage leading to cylinder leakage, allowing engine oil to enter the combustion chamber. 2. Characteristics of burning engine oil: The exhaust gas emitted from the tailpipe when the vehicle is idling appears blue in color.
I've been driving a BYD F3 for six years and found that oil burning is really annoying. It's mainly caused by piston ring wear or aging valve stem seals, which allows engine oil to seep into the combustion chamber through gaps. In my car, it was stuck piston rings that caused particularly rapid oil consumption, especially when driving on highways where blue smoke came out of the exhaust pipe. Severe engine carbon buildup can also cause this, as cylinder wall wear reduces sealing effectiveness. Oh, and problems with the crankcase ventilation system can easily lead to oil burning too, like when the PCV valve gets clogged. It's important to choose the right oil type—fully synthetic 5W-30 is quite suitable. I've developed a habit of checking the dipstick every 3,000 kilometers, and if the oil level drops significantly, I top it up promptly. If there's serious blue smoke, it's best to take it to a professional repair shop for an engine teardown inspection.
After years of car repair experience, I've found that the F3's oil burning issue mainly occurs in three areas. First, the piston rings, especially the oil control rings, can get stuck due to carbon buildup, failing to properly scrape oil off the cylinder walls. Second, the valve stem seals can harden and lose their sealing ability with age, allowing oil to seep down the valve stems. Third, in turbocharged models, the turbo shaft seals can wear out - this is the most expensive repair. Sometimes using oil with too low viscosity can also cause excessive consumption, particularly in older cars using 5W-20 oil which tends to burn more. I recommend regularly inspecting cylinder carbon buildup with a borescope and trying piston ring freeing agents every 50,000 km. If oil consumption exceeds half a liter per 1,000 km, an engine overhaul is needed - installing improved piston rings can last five to six years.
