help needed with winconsin motor please.

[bluegum30]

I have a 4 cylinder air cooled Winconsin motor i want to free up, about 4 years ago it was turning over with the crank handle, but i didn't start it because it would turn over so far and jam and when i rocked it back a bit there was aloud clack inside like a valve was sticking and coming free. So i left it meaning to look at it later, well i looked at it today and it is rock solid i was going to pour some lubricant in the plug holes and hope this frees it up.What sort of stuff would be best to pour down the plug holes ??all advice appreciated thanks.

lloyd.

[RETIRED]

You could try Penetrene or WD 40 but I think it will be a lost cause.

Moisture has probably made the piston "grow" or rusted the rings to the bore.

[dj_pnevans]

Mix oil and fuel (home made Penetrene)
David