Whistling turbo and black smoke!
My 2.4 20v JTD has recently developed a whistling sound from the turbo, and a puff of black smoke under acceleration.
When cruising normally, there is no smoke, only a puff when under load.
My upper intake hose did have a split in it causing a "wooshing" sound but this has now been repaired - wooshing sound now gone. The split was patched up, the pipe wasnt replaced.
My intercooler did have a crack in the plastic housing but this has now been replaced.
The lower turbo pipe has been checked but no obvious splits, or leaking of oil.
EGR valve has been removed and cleaned thoroughly
Even after the steps above, the whistling from the turbo and puff of black smoke under acceleration remain. Does anyone have any suggestions please?