Have used this forum many times but have not posted anything until now. I have a 2005 Scenic II 1.9DCI (130bhp). I recently noticed the sound of an air leak to the nearside of the engine bay and there was also a loss of power. After a couple of miles the sound went away and the power returned. Over the last couple of days though the sound of the air leak has returned and again there has been a distinct loss of power. This has been the case for a couple of days now. Any thoughts ?