I found paperwork in the car from a while back. Claims a compression test was done and the back rotor had no compression. From that I’m planning on taking the motor out and rebuilding it.

I poured 2 stroke oil down the leading trail plugs and hand cranked it. I attached two videos of me cranking it over. Does it sound as if the other rotor is working fine? Not sure what exactly I’m supposed to be listening for..
Thanks.

 

If you took the leading or trailing plugs out then cranked it you should hear and feel compressed air pulsing out of each front then rear, then front, etc and be evenly spaced to ensure all 6 chambers have some sort of compression.