Hi folks, tecnical question here, my uncle has a 2003 ducato Kon Tiki 2.8 turbo diesel. the engine rattles when it's being driven and for a wee while when it idles then goes away but as soon as you rev it, it starts again, sounds maybe like a tappet or something? is this normal? also it seems very sluggish to drive i know its a big van but the acceleration seems pretty poor and if your lucky you'll get 70 on the motorway, Any fellow owners give some comparison/advice? thanks very much.