What's the best way to replace that PCV Breather Hose? Mine just blew Sunday on the way up to Mt. St. Helens visitor center. We duct-taped it back together so I could get down the mountain.That line returns oil vapours to the cylinders to be reburned as a emission control. Everything around that could get oily (Including your belts), dirty air could get in the crack and get into cylinders, and you could experience a mildy off idle. I would just fix it.