Pcp pump problem

[Haniball1337]

Hi i just ordered this pcp pump https://pl.aliexpress.com/item/32850137 ... 4bfciMR9sO and i get this pump today , I apply everything (hose and pressure gauge) and when i pump air the pump just fart , its farting and i think it leaks from the grip idk , it push air from the hose when i push the piston (pipe?) upwards, no down , is it normal? Here is video

[jackssmirkingrevenge]

[Haniball1337]

You mean this? bleed screw i think is tightest i can get and this nut are tight too i think

[Haniball1337]

here is video when air leak from grip. i take out quick connect and the farts air coming from the end of hose

[Haniball1337]

I dont have any water and oil inside pump too.. Can i fill this with destile water?

[Haniball1337]

Nevermind i think its okay i just put plug and i was able to pump high pressure