This is the beginning of the story.
After the purchase, I had to capitalize the engine right away. Almost everything has been changed. But something went wrong... At some point after this very capital, a strange chirping sound appeared in the engine.
— it appears exclusively when it’s cold
— appears at rpm 1900-2500 (but again, not always, it’s there, then it’s not there)
— stops if you lower the gas.
— appears only with a gradual increase in speed (if you accelerate sharply, then there is no such thing)
I have already changed the oil several times along with the filter (there are no shavings or anything like that in the oil or filter) I am attaching a video of this very chatter.
Maybe someone knows what the problem is?