Re: Best Way to Unseize an Engine

[legendre]

If it’s really seized hard, as in the rings / piston are essentially welded to the cylinder walls, then you’ve got a real mess on your hands..

If it’s only sticky-stuck from sitting, where a little rust forms between the rings and cylinder walls, then you can get it moving just as B.Morrison suggests. Use penetrant, heat, tapping, time and patience. If it is stubborn, remove the cylinder head for better access to tap and/or apply penetrant.