I dropped the oil pan and turned the flywheel by hand but it's still got a stopping point. I couldn't see anything from underneath that just looked crazy bad or bent up. All the piston rods seem to be ok but I'm no expert and don't know everything to look for. There was zero metal shavings or junk in the oil or pan, just for what that's worth. What's next for me to do ya think, pull the head off?
Thanks, Troy
Could there possibly be something stuck in a timing gear? That's easier than pulling off the head.
I agree with Mike though, a busted valve spring is not a good sign. And with that, there's no guarantee that the valve stayed closed properly, or that it isn't bent. I would try things that are easier than pulling the head first if possible, but it may be inevitable. It couldn't hurt to yank out the distributor and oil pump, just to make sure they aren't jamming somehow.
