Hi , hope someone can help me out please, i just bought a VW Caddy SDi 2008 model, the guy i bought it from had just had a No 4 injector replaced, sometimes the van will start ok , HOT or COLD, but most of the time you have to wind it up to start it . Also when its started the idle is a bit irregular (rough) it ticks over under 1000 revs. IT also smokes quite a bit ,Blue/Grey. Could this b a prob with the injectors? surely the garage the did the job would have checked the rest of the injectors ! i very concerned about this , what could i try out ? i look forward to a reply, THanks, Wolfie