Replacing spark plug wires

If the lifter has too much clearance, ( no preload) it will tick. The problem here is that the lifter has a retainer clip that holds the piston part of the lifter from coming out. That is not how they are designed to work and the clip will eventually fail and fall into the bottom of the engine, or not. Sometimes it is catastrophic, other times not, but it's a roll of the dice that is not in your favor.