Citroen c3 1.4 hdi Hi I've been told by a local mechanic that my injector seal is broken ( makes a strange chuffing sound) but he also said there is a 50/50 chance that the injector will be siezsed and will require pulling that might break it requiring a new one that wil be expensive is he just preparing me for the worst or is it likely the case. P.s apart from me chuffing there is no adverse affect of the prob I.e no Loss of power starts first time every time. Any input would be great thanks.