#2 no compression

Is there a fix to keep rocker arms from falling off besides a complete tear down? Should I just put the arm back on and drive it or sell it? 194,000 miles. Plugs were so worn, the electrodes were mostly gone and gap was 100 tho which I'm sure didn't help with the carbon issues this motor must have. Engine misfired a few times, but would go away after restart which lead me to believe valves were sticking maybe and eventually made the rocker arm fall off? Any thoughts?

Sounds like a broken valve spring or a valve seat that came loose. Either way, costly damage if you don't get it fixed.

I've only had to pop one back on once but could try this:

3.7 /4.7 Chrysler Jeep Rocker Arm Problems - YouTube

Rockers should not be falling out, ever. If it does, there is a problem.

Anyone have any experience or know if these rebuilt and updated engines are good?

Dodge 3.7 Engine, Jeep 3.7 Engine 02-03