Engine
Vanne PCV
La vanne PCV renvoie les gaz du carter vers l’admission pour les brûler.
Free guide
Advertisement
Combustion flow
Interactive — tap a partTap a part to see how it fits in the system.
What it does
- Évacue les gaz du carter
- Prévient les fuites d’huile
When it fails
- Fuite d’huile aux joints
- Fumée bleue au ralenti
How to diagnose
- Secouez la vanne
- Testez le circuit
Maintenance
- Remplacez vanne et durites
Use the diagnosis order. When a part fails, confirm each hypothesis with measurements before replacing anything — codes and symptoms overlap.