What is this? -Desperate Situation Guy
 

Okay so the light came out this morning and I noticed whatever this thing is(see photo) was shooting air out of the bottom of it (marked by blue square). This is where the noise (motorcycle noise) I was referring to in my other post is coming from. Should there be a tube attached to the bottom of it?
Thanks guys, I hope this is the problem and hopefully a quick fix.

Wes