Hello, I have a 2003 sportster, and I was cleaning out the tank the other day and I blew through the breather nipple on the bottom side of the tank because it was having weird pressure issues everytime I’d take the cap off. I blew into it to make sure it wasn’t blocked. Well that must have done something inside the tank because now it just acts like another petcock and leaks a ton of fuel. I capped it for now but that obviously isn’t a smart fix. Any ideas of how to fix this

 

Please describe "weird pressure issues" so we don't have to guess.

 

Vacuum petcock bodged w pressure?

 

Where did you introduce the air ?

 

Just keep blowing it. The fluid will stop spurting out eventually.