I kept hearing a loud hissing noise and discovered that a vacuum hose on the intake manifold was cracked, I replaced it. So that peaked my interest. What does the hose off the intake manifold control? I followed the hose over by the battery, I marked where that hose connects to some other branches and noticed a strange hose. The lower arrow points to what I hope is a check valve?? Or is this a broken piece?
Take a look and see if you can tell me what all this controls. I'd like to know what to troubleshoot if something is out of place.
Thanks for your help!