ceased 12 valve
depends on what caused it, u can try spining it backwards, u might5 have to loosen all the main bolts if it spun a crank shaft bearing, if it filled the piston full of coolant from a crack cylinder or a head gasket failure, u would have to pull an injector. it all depends on what caused it. good luck
pull the head and use wd40 or other pentrating oil to get the rust freed up. had a 22r that did the same thing. i just pulled the spark plugs and filled the cylinders with wd40 and let it sit for a few days. then used a breaker bar to get it turning and then put 10k on the engine befor it lost a rod. it was in my 82 rock crawler. good luck.









