Gy6 scooter fuel line #shorts #short #diy

Is the top nipple something I’m supposed to be able to blow into I have one that wether I blow into or suck nothing like it’s clogged does not seem normal imo but then again not familiar with them

Thanks for the information 👍

150cc Blaze wolf Blaze 2 I'm ordering a new Petco just like this one do you think my old one after sitting for 3 years and not being replaced running bad fuel up until now ruined the old one??😢 I want my moped to run again it dies with throttle I have a vacuum leak but I also want to make sure the vacuum is good through petcock because they're new lines to a new carburetor please help me complete vacuum issue....... I also have a splitter shaped like a y coming from manifold left side small lines really small and when I pinched one of the lines it's surely revved up I don't know where the leak is but I need help figuring it out if it would be best to replace petcock godbless because of vacuum issue

Tks