It depends on what caused it to be locked up. You will need to disassemble the engine and repair or replace any broken parts.
the fact that an engine is locked up may be caused by the fact that the engine is in fact locked up
Repair or replace.
That is correct...
Depends on what caused the engine to lock up. Most of the time a locked up engine is very serious and will require disassembly.
Remove all the spark plugs. If you cannot turn the engine over by hand with a socket & ratchet, it is locked up.
It won't crank!
A locked up enguine cannot be unlocked
To free up a locked Honda engine, start by removing the spark plugs to relieve compression. Then, apply a penetrating oil, such as PB Blaster or WD-40, into the cylinders and let it sit for several hours or overnight. Afterward, attempt to turn the crankshaft manually using a socket and ratchet on the crankshaft pulley bolt. If the engine still doesn't budge, you may need to repeat the process or consult a professional for further assistance.
no.......
the engine is locked up. Not good. Very expensive.
A locked up engine will need overhauled or replaced.
Your engine could be locked up from low oil, burnt up rings or just a blown up engine