Rattle when deceleration

[Nono462]

Hey,

so I’ve been working on the exhaust to my MK7 and there is this really annoying rattle when decelerating. I thought it was my old down pipe so I put a new one in and the sound is still there. I thought maybe an exhaust leak but then I had it to just the down pipe (shown in video) and that “rattle” is still there. I removed the known heat shield to cause a rattle and still happening. Any ideas on what would be causing it? My next thought is the waste gate but I’m not too sure.

https://youtube.com/shorts/8n-jk0TQ4Y8?si=9OqPVqt5GBr9aQFz

 

[hans611]

Wastegate, when closed its slightly loose and it rattles on the turbo housing... I had this issue in my MK5... took it to a couple of shops and they all told me I needed a new turbo, I went ahead and tightened the rod nuts just a tad, like a few mm and it was enough to hold it closed tight.... its probably easier to do this on the MK7 as you can reach the turbo from the top.