I was looking at taking out the Idle air valve for cleaning, and there is a small 6" or so hose near by that connects from the idle air into the top of the engine, I can't get pics cause its too dark here now, but that hose is deterorated to the point that if I pull on it it wants to come apart. What is this hose size so I can get a replacement?

-will

 

I do not know what the inside diameter is but I used fuel line from a lawn mower. I cut it long so it wouldnt kink.

 

Got it...all nice and pretty!

What exactly does this tube do?