Pride gone... asking for help

pishta said

remove rockers and Hit them valve stems with a penetrating oil, or 50/50 kerosene and ATF mix and a light hammer. Even a little tap at TDC wont hurt the piston. all you want to do is break the seizure. The springs may help to pull the valves up overnight if you just soak them all.

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that worked for me a couple of times. i mean probably 20 times on two different slants. It was quite awhile ago, but i think i even bumped the valves back up a little with the pistons on a couple of the most stubborn ones. Penetrating oil is your friend and recoiless (deadblow)hammer will help. If you take the rocker shaft off, make sure you put it back with the correct orientation, or it won't oil properly.