Originally Posted by cobalt327
Sometimes air gets trapped under the seal and (kind of like when you use silicone grease on spark plug boots) the seal wants to pop back up unless the pressure is relieved. Might take a little pinch/squeeze
at the top of the seal to distort the ID of the seal just enough to let air out past the valve stem. Or maybe use a toothpick to slip in between the stem and seal.
LOL! I tried the pinch/squeeze method but that was a bit difficult with the metal bands around these viton seals. Then again, I'm always so paranoid about damaging anything, I probably didn't apply enough pressure. The tooth pick I would've never though of, since I'm having to use an installation sleeve to protect the seals.
I gotta say, these seals are really tight and it does take some serious pressure to slide 'em down. But once they are, I can tell there aren't going anywhere. I almost became concerned that the exhaust valves may not get enough lubrication.