Vauxhall Insignia 2010 engine rattle/knock

[Jamesk77]

Hello all,

Hoping someone can shed some light on what's causing my car to sound like a bag of nails.

About a week ago started it up after work and there was a very audible knocking (tapping?) Noise. No engine warning lights so I thought maybe a lose exhaust bracket so slowly pulled off, drove fine and noise completely stopped. But today it has returned, again only noticable when idling at a junction and still no faults being reported, drives 100% normal.

Have uploaded a short video with audio.

https://youtu.be/Zv7CI2KCUu8

Thanks

[Jamesk77]

stevieturbo said:

If it's that intermittent random noise during the video...it sure doesnt sound good...although wouldnt be convinced it is the engine itself.

Doesnt even sound like a DMF..although that would be a potential candidate if one is fitted.

or maybe clutched alternator pulley or something

Would really need to see/hear in person to attempt to diagnose.

Yes it's the random intermittent knocking noise you can hear in the back ground. Sometimes it is more continuous, but Everytime I got out to record it it would stop. Will try and get a better video.