How to fix sticky lifter.

Nothing in a bottle will clean a lifter full of crap, there is no where for the junk to go. Put a hole in the side of a cup half way up. Pour some sand in there and put a lid on it. Lower the cup in a pail of water, or rislone. Pull it out and see if there is any sand left in it. I got a fat dime saying there is sand still in it, like all of it! Pressurized oil goes in and then gets the lid closed on it. It doesnt compress so it turns into a solid lifter, full of oil. The oil will seep out over time, bleed down after you shut pressure down, past the piston but it wont carry the particulate with it so it just collects down there forever. One piece in the check ball orifice and the thing acts like a little pump, pumping oil out past the check ball as soon as the lifter hits the vavle spring tension. Its no longer a solid lifter but a spongy clatterbox. Higher rpms raise the pressure and speed of the lifter and now the lifter acts again like a solid because it cant bleed fast enough, its the same principle as a Rhoads lifter or other high bleed lifter designs. Just pull it and clean it, itll take less time than dropping a new one in and running the break in procedure again for that one lobe. Plus itll give you the chance to look at the cobdition if the lifter face to see if there is any strange patterns or concave feature to it. Its a free fix. Try it. Or replace it..up to you.