What is this?

[Patrick Bateman]

and why is mine loose?

 

[Budgie]

Fuel rail guard.

It's loose because the nuts aren't done up tight enough.

10mm socket. Job's a good;un.

 

[DrR]

Injector cover, bolts that hold it on are in the holes on the front, just do it up.

 

[imprezaworks]

As above.

But the reply did make me chuckle

 

[Patrick Bateman]

Couldn't see any bolts at a glance, cheers!

 

[Budgie]

They're front facing, in two of the three holes you can see by the slam panel seal matey.

 

[Patrick Bateman]

This might have also been the odd, loud rattle I've heard when hitting large potholes at speed, it was completely loose.