How to Solve the Oil Burning Issue in Peugeot 408?
4 Answers
The solutions for oil burning in Peugeot 408 are: 1. If the piston rings are stuck due to carbon deposits in the cylinder, cleaning the piston rings will suffice; 2. If the valve stem seals are damaged, replacing the valve stem seals can solve the issue, and this can be done without disassembling the cylinder; 3. If the cylinder walls and pistons are severely worn, then an engine overhaul is necessary. Taking the 2020 Peugeot 408 as an example, its body structure is a four-door, five-seater sedan, with body dimensions of length 4750mm, width 1820mm, height 1488mm, a wheelbase of 2730mm, a fuel tank capacity of 53 liters, a trunk capacity of 455 liters, and a curb weight of 1325kg.
As a veteran driver with over 20 years of experience, I've seen plenty of cases of Peugeot 408 burning oil. It's usually caused by engine aging, such as worn piston rings or failed valve stem seals, which allow oil to enter the combustion chamber and burn. A rapid drop in oil level on the dipstick is a clear sign. You can start by checking the PCV valve yourself – if it's clogged, it can accelerate oil consumption. Trying an additive to clean carbon deposits might provide temporary relief. But don't delay too long, otherwise the engine could suffer more damage and repairs will cost more. I recommend finding a trustworthy repair shop for proper diagnosis, and don't immediately believe any major overhaul suggestions. Regular full synthetic oil changes and avoiding sudden acceleration can help prevent this issue.
I've repaired quite a few Peugeot 408s, and oil burning issues are quite common. The core problem lies in component wear, such as poor piston ring sealing or leaking valve stem seals. As car owners, we can perform a simple test: if blue smoke appears when starting the car, it means oil is burning. The solution requires step-by-step troubleshooting - start by replacing the PCV valve or checking the seals, which isn't costly; for severe cases, an engine overhaul with piston ring replacement is needed. Driving habits are crucial - prolonged high-speed driving at high RPM accelerates wear. Regular maintenance using the correct oil grade can extend engine life. When encountering oil burning issues, avoid randomly adding additives - professional diagnostics provide the most effective solution.
My 408 burned oil last year, which really worried me, so I started researching solutions. Common causes like piston ring issues or oil seal leaks were on my mind. I tried adding engine oil cleaner, but the effect was mediocre. Later, an inspection revealed that the valve stem seals were faulty, and replacing them made a big difference. Prevention is simple: avoid aggressive throttle inputs and stick to regular oil and filter changes—it works. Prolonged oil burning can damage the engine, so I addressed it promptly, and now the car runs much more smoothly.
