Is hydro locking permanent

Answer 1

Some further information would have been helpful (such as the conditions under which the condition occurred.) Assuming that the engine has for one reason or another ingested a liquid (water, oil, etc.) and siezed up because it can't compress a liquid, just remove the spark plugs and turn the engine over slowly several times manually. The liquid will be expelled. Reinstall plugs (new ones if the fluid fouled the originals) and the engine should turn freely. If the liquid came from within the engine, the source should obviously be repaired.

Answer 2

Hydro locking can cause serious damage to the engine if water enters the combustion chamber. Depending on the extent of the damage, it may require repairs or even engine replacement. In some cases, the damage can be repaired, but it is important to address the issue promptly to minimize potential long-term consequences.