Took it to ford they diagnosed 4 faulty injectors so u were right £750 had them replaced...BUT same thing is happening white smoke from cold n juddering until cars warmed up?? depressing n baffling. ford want to charge me more for investigating into it more but i said they should investigate it for nothing as they have not fixed the problem by changing the injectors...now got trading standards involved!! having no luck wi this car...any other ideas what might be?? getting timing checked tomorrow.