There are a couple of lifter that are pumped up before installation usually ant pump 0 lash types and Rhoads lifters! So a person needs to read directions!
HOW TO's: ORIGINAL RHOADS LIFTERS
Before installation, each Rhoads Lifter should be fully filled with oil. To fill with oil, completely submerge each lifter upright into a container of oil and compress the inner plunger with a pushrod or screwdriver until the plunger is driven to the bottom of the lifter. Hold several seconds and release slowly. Repeat several times until the lifter is fully filled. NOTE: Soaking lifters in oil will not fill them. Also, make sure to apply assembly lube to each cam lobe and lifter bottom!
To understand and adjust your lifters go here:
Good night Wezz its 4:30 A.M. here!!!