Question about vacuum lines

[Zachary]

Hey guys,

I took a close look at some of my vacuum lines today after the car started running rough with a few misses at idle. I noticed a line had been broken off of a strange looking bolt shaped valve? It is attached to a small black box, with a few more of these bolt/valve things, and that is connected with a hose to the intake manifold. I am fairly new w/ Fiats, and I have been searching the internet all afternoon trying to find out what this is. I suspect a fairly significant vacuum leak, the idle is way off. I can try and get a picture up soon.

Thanks,

Zach


EDIT: It looks just like part 17630 on this diagram.

http://www.google.ca/imgres?imgurl=http ... 29,r:9,s:0

Thanks.