If you install a gage in the hyd circuit for the lift and tilt, you will see when you have pressure and use it to trouble shoot and monitor the hyd system.
You could also make a gage test like these and plug into which ever circuit you want to monitor and trouble shoot.
Whenever you operate a hyd valve, you should see any pressure developed, and if no pressure, the spool is not working, or the pump is not pumping, or you have a severe leak.
Anyway, just lifting the bucket will only show about 500 psi, and when raising a fully loaded bucket, it might show upwards of 3000 psi.
If you put a QD half in the drive circuit, and plug the gage in, you can get an idea of the power of your drive system.