Try soaking with Marvel Mystery Oil or Kroll oil on the walls for a few days to let it penetrate, and maybe free up any frozen rings.
If your turning the motor over with rust and crud you have a very good chance of scoring up the rings and scratching the walls.
It should be dissembled and the crank taken out so you can move the pistons up or down to clean first before rotating any moving parts over. Good time to check the complete motor over.
If not it will cost more in the long run.
Monday, August 2nd, 2010 AT 9:24 PM