Probably a stupid question
All seems good, no issues but got it home and noticed a vacuum line unplugged from a part of the engine that I don't know what is.
Can one of you let me know a) what the round brass colored component is just to the front left off the side of the engine and b) if the vacuum hose that forms a hard 'U' into place being unplugged would cause any issues?
Image attached - Yellow arrow is the line that was pulled out. What is the component circled in red?
Thanks guys!
If the vacuum hose is unplugged from anything you will have a vacuum leak first thing.


