In the upper left section of the picture above there is cylindrical part with two tabs and hose barb. It sits slightly behind and between the #5 and #6 coils.

If anyone here knows:

> what it is (i'm curious)
> Most importantly if that hose barb is supposed to be attached to something or be covered by a "plug"...

When I took the engine cover off to change the plugs and coils that hose barb had a very dried out and cracked piece of what looked to be rubber or plastic on it.

It was open on the end, it looked like a hose that was brittle and broke off. However there is no hose anywhere near that area that I can see/find. I'm thinking it was maybe a cap that got brittle and fell apart.

My concern is if its vacuum and should be capped I need plug it. if its vacuum or pressure or whatever and should be connected to something I need to find the hose...

So, if anyone can help me I would greatly appreciate it.

Thank you...