Reading this seems like reading my own life lol. I like you have a low milage HDI at 88k with really loud rattle. I have swapped the injectors (to 076), swapped the crank pulley twice, sound deadened each injector and engine cover & run with 2 stroke. Nothing has helped as much as it could. The annoying this is a work mates stage 2 hdi with higher mileage does not have this issue. I moan daily too everyone about this, only difference is he has a exhaust system making his sound louder so I'm hoping putting my one on muffled the rattle.
I've spend hundreds trying to get this gone lol.
I've spend hundreds trying to get this gone lol.