UKPassats

Hi all.newbie here just purchased a 2004 passat tdi130 it had been sat for 6/7 months full history lady owner was non runner when picked up but new battery levels checked fired up first turn but noticed on a run round the block black/ blue smoke when floored and whilst ticking over more grey on tickover egr looks clean but is oil around it and the pipe dosnt seem to fit right can push pull in or out a few mm not sure if this is old diesel or that its never been driven hard or that its stood for a while temp never quite reaches half way i cant take on a good drive because i dont want to take my other car off road till i know what the issue is with this.