About to crank by car after 6 months of slowly doing the head gasket. When I went to actually remove the head there was a small diameter hose that was still connected and I had to quickly cut it because the head was so heavy. Like a moron I didn't look to see what it went to (plus I was so happy to finally get the head off). Now that everything is back together I'm wondering what the heck it went to. It wasn't a vacuum hose (I checked all of those) but it was the same diameter. I realize this is pretty idiotic but wondering if anyone might know which one it is. It was physically connected to the head.