Rebuild turned bad

The world's longest sentence comes from using your voice command you can just talk and talk and talk and it will record everything you say and some other things too unless you say. Or? Oops it made it. It made it?
To answer the question There is formation that I would like also? Did you Prime the motor with oil and check to see both sides are oiling? I've heard of a cam bearing slipping, blocking off the oiling Holes and creating a lot of back pressure? But obviously I'm spitballing here....

worldslongestsentence! to thick oil. might need a weaker spring in the pump.