VW 1.9 TDI Sparks from under car

[Al Wyn]

Earlier I followed a friend car that was sparking from the underside. Initially I thought his exhaust had dropped but I drove along side and the sparks were from the front/engine bay area. Got him to pull over and the car is running a bit rough(er) than usual on tickover too. Any ideas anyone?

[Al Wyn]

Late reply but for the record it was the dramatic departure of the cars dual mass flywheel and clutch.