Now, he is learning about repairing a very lucky engine that only partially dropped a valve seat on the way home from the lot.
(He ignored my advise on getting a buyer inspection at an independent shop)
Of course I have to teach him, it is an opportunity for him to finally get his hands dirty and learn something important about life...everything either takes time and skill or money, luck is just not to expect, and there is no App that fixes cars.
I knoweth of valve troubles some myself.
The venerable 65 has some flaky action with #1 valve but I can live with it. At most it’s a slight miss.
The other one will need a reman engine and that will be shop job.
I’m at the point with everything here, especially some nagging health problems where I will buy the parts and when I can write the check, pay a pro unless it is something low level.