out plowing
Member
Having read many posts on what to use for loosening up a stuck block lets have a pole at to what you used to get yours unstuck.
Really old, sunken marine engines have been freed by putting a load of
burning charcoal briquets in a stuck cylinder, and leaving them in place
until cool. Vacuum out the ashes.
Follow-up with MMO and tapping with a wood block and mallet.