That's the EVAP/vapor line. There is a black plastic tube one the intake manifold that runs to it. I can see it in your pics. Looks like the end was broken off.
That's the EVAP/vapor line. There is a black plastic tube one the intake manifold that runs to it. I can see it in your pics. Looks like the end was broken off.
You're exactly right, now that I know it's just a vaccum tap i'm going to cap it off for my car...
Thanks