Could you show us a picture of your hydraulic engine lift, and if possible, with some indication of which parts need to move?

You say your hydraulic engine lift has two parts, but the hydraulic ram alone would require at least two moving parts (cylinder and piston). Then presumably there is a base and lifting arm, not to mention a hook and wheels. At least those are the sort of engine lifts I am familiar with, and what you will see if you Google "hydraulic engine lift".

I'm not intending to be critical here, just trying to understand how your engine lift is supposed to work, and wondering if it has enough parts to actually work.