Peugeot 407 2.0HDi 16v 136bhp.
Particle filter eas blocked, now unblocked, regenerated. No fault codes.
When engine is reved to 2-3,000 a vibration nose comes inlet manifold, press hand firmley on ilet manifold and it goes.
When particle filter blocked the car lost power and arubber hose from filter to valve on bulkhead was damaged, now repaired.
Any one else had this nose and can you help.
Thank you 321qss.