Evening all. The wife's 2013 Roomster 1.2 TDi Ecoline has been making a funny noise for as long as I've known her (the wife, not the car). Imagine a duck quietly chuckling. That's the noise. Thing is recently it got a bit louder, and it has sped up, a chuckle every second or so now when the engine is idling. You can feel the N75 valve vibrating in time with the chuckle. So, new valve, fix valve, leaky pipe somewhere? Will it do any harm to leave it chuckling away?
