Originally Posted by les_garten

ps2cho,
I also noticed something that surprised me. There is a large rubber elbow that attaches from the valve cover to the aircleaner. It has a small vacuum tap off that goes to the fuel pressure regulator. I just recently replaced this because the original was hard and crumbly. I always assumed this was a crankcase vent to put excess oil fumes into the intake for burning. Basically a PCV. Mine has vacuum on it when it is dc'd from the aircleaner but connected to the valve cover. Is that normal? Sucks on my hand.