See if oil makes it to that hole when you increase RPM. If it doesn't, do what Jerry suggests.
If it were mine, and it won't weep at higher RPM, I would bite the bullet and pull the lifter assembly, knock the ends out of the rocker tubes and thoroughly clean them. The ends of the tubes have what look like freeze plugs. They come out and go back in easy enough.
While you have it apart, look for excessive wear on the tubes where the rocker arms ride. This will prevent oil from reaching the weep holes on top since it will all leak out at the bottom of the rocker arm bore.
Carl
Last edited by 52Carl; 11/06/2019 12:16 AM.
