seized

Hello I recently got a MX 175 from my grandpa and I need some help! It has a seized engine. I put some Marvel Mystery Oil through the spark plug hole. It has been sitting for about a day. Anyone have any other suggestions! Also the clutch won’t engage. I pull it in and nothing. My grandpa said...

Riding on the road on the long weekend, sounded like the top end went. When you go to kick it over the kick start was hard as hell but still moved. Would not run though. Took off the head, on certain strokes of the kick starter you can push the piston down, on some not. Kick start still very...