This is critical. Peugeot recommends every 10 years or 240,000 km in "normal" conditions, but mechanics strongly advise changing it every 150,000 km or 8 years to prevent catastrophic engine failure.
Cleaning the valve usually works, but high-mileage cars may require a replacement. Rear Axle (Train Arrière) revue technique automobile peugeot 206 14 hdi
The Peugeot 206 1.4 HDi remains one of the most economical cars on the used market. By staying on top of the injector seals and the timing belt, you can easily see this engine pass the 300,000 km mark. This is critical
A classic 1.4 HDi problem. If you hear a "chuffing" sound (like a steam train) or smell diesel fumes in the cabin, your injector seals are likely leaking. 000 km in "normal" conditions