Knp yer tangki minyak sebelah penuh sebelah jadi kosong

Почему ничего не объяснят как будто немой ? Надписи нету , голоса тоже нету . 😢😮😊

I did all this procedure, but when in operation the hoses that go to the fuel filter are vibrating, causing a buzz. How to fix it??

Please could you tell me what the other part is called, there's the fuel pump with the float what's the other side called?